CWE-1286
AllowedImproper Validation of Syntactic Correctness of Input
Abstraction: Base · Status: Incomplete
The product receives input that is expected to be well-formed - i.e., to comply with a certain syntax - but it does not validate or incorrectly validates that the input complies with the syntax.
155 vulnerabilities reference this CWE, most recent first.
GHSA-FP89-4294-45Q3
Vulnerability from github – Published: 2023-08-09 12:30 – Updated: 2024-09-20 12:31An authenticated administrator can upload a SAML configuration file with the wrong format, with the application not checking the correct file format. Every subsequent application request will return an error.
The whole application in rendered unusable until a console intervention.
{
"affected": [],
"aliases": [
"CVE-2023-23903"
],
"database_specific": {
"cwe_ids": [
"CWE-1286",
"CWE-20"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-08-09T10:15:09Z",
"severity": "MODERATE"
},
"details": "An authenticated administrator can upload a SAML configuration file with the wrong format, with the application not checking the correct file format. Every subsequent application request will return an error.\n\nThe whole application in rendered unusable until a console intervention.\n\n",
"id": "GHSA-fp89-4294-45q3",
"modified": "2024-09-20T12:31:45Z",
"published": "2023-08-09T12:30:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-23903"
},
{
"type": "WEB",
"url": "https://security.nozominetworks.com/NN-2023:7-01"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-G2PF-XV49-M2H5
Vulnerability from github – Published: 2026-04-02 20:36 – Updated: 2026-05-13 16:19Summary
Rack::Request parses the Host header using an AUTHORITY regular expression that accepts characters not permitted in RFC-compliant hostnames, including /, ?, #, and @. Because req.host returns the full parsed value, applications that validate hosts using naive prefix or suffix checks can be bypassed.
For example, a check such as req.host.start_with?("myapp.com") can be bypassed with Host: myapp.com@evil.com, and a check such as req.host.end_with?("myapp.com") can be bypassed with Host: evil.com/myapp.com.
This can lead to host header poisoning in applications that use req.host, req.url, or req.base_url for link generation, redirects, or origin validation.
Details
Rack::Request parses the authority component using logic equivalent to:
AUTHORITY = /
\A
(?<host>
\[(?<address>#{ipv6})\]
|
(?<address>[[[:graph:]&&[^\[\]]]]*?)
)
(:(?<port>\d+))?
\z
/x
The character class used for non-IPv6 hosts accepts nearly all printable characters except [ and ]. This includes reserved URI delimiters such as @, /, ?, and #, which are not valid hostname characters under RFC 3986 host syntax.
As a result, values such as the following are accepted and returned through req.host:
myapp.com@evil.com
evil.com/myapp.com
evil.com#myapp.com
Applications that attempt to allowlist hosts using string prefix or suffix checks may therefore treat attacker-controlled hosts as trusted. For example:
req.host.start_with?("myapp.com")
accepts:
myapp.com@evil.com
and:
req.host.end_with?("myapp.com")
accepts:
evil.com/myapp.com
When those values are later used to build absolute URLs or enforce origin restrictions, the application may produce attacker-controlled results.
Impact
Applications that rely on req.host, req.url, or req.base_url may be affected if they perform naive host validation or assume Rack only returns RFC-valid hostnames.
In affected deployments, an attacker may be able to bypass host allowlists and poison generated links, redirects, or origin-dependent security decisions. This can enable attacks such as password reset link poisoning or other host header injection issues.
The practical impact depends on application behavior. If the application or reverse proxy already enforces strict host validation, exploitability may be reduced or eliminated.
Mitigation
- Update to a patched version of Rack that rejects invalid authority characters in
Host. - Enforce strict
Hostheader validation at the reverse proxy or load balancer. - Do not rely on prefix or suffix string checks such as
start_with?orend_with?for host allowlisting. - Use exact host allowlists, or exact subdomain boundary checks, after validating that the host is syntactically valid.
{
"affected": [
{
"package": {
"ecosystem": "RubyGems",
"name": "rack"
},
"ranges": [
{
"events": [
{
"introduced": "3.0.0.beta1"
},
{
"fixed": "3.1.21"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "RubyGems",
"name": "rack"
},
"ranges": [
{
"events": [
{
"introduced": "3.2.0"
},
{
"fixed": "3.2.6"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-34835"
],
"database_specific": {
"cwe_ids": [
"CWE-1286"
],
"github_reviewed": true,
"github_reviewed_at": "2026-04-02T20:36:40Z",
"nvd_published_at": "2026-04-02T18:16:33Z",
"severity": "MODERATE"
},
"details": "## Summary\n\n`Rack::Request` parses the `Host` header using an `AUTHORITY` regular expression that accepts characters not permitted in RFC-compliant hostnames, including `/`, `?`, `#`, and `@`. Because `req.host` returns the full parsed value, applications that validate hosts using naive prefix or suffix checks can be bypassed.\n\nFor example, a check such as `req.host.start_with?(\"myapp.com\")` can be bypassed with `Host: myapp.com@evil.com`, and a check such as `req.host.end_with?(\"myapp.com\")` can be bypassed with `Host: evil.com/myapp.com`.\n\nThis can lead to host header poisoning in applications that use `req.host`, `req.url`, or `req.base_url` for link generation, redirects, or origin validation.\n\n## Details\n\n`Rack::Request` parses the authority component using logic equivalent to:\n\n```ruby\nAUTHORITY = /\n \\A\n (?\u003chost\u003e\n \\[(?\u003caddress\u003e#{ipv6})\\]\n |\n (?\u003caddress\u003e[[[:graph:]\u0026\u0026[^\\[\\]]]]*?)\n )\n (:(?\u003cport\u003e\\d+))?\n \\z\n/x\n```\n\nThe character class used for non-IPv6 hosts accepts nearly all printable characters except `[` and `]`. This includes reserved URI delimiters such as `@`, `/`, `?`, and `#`, which are not valid hostname characters under RFC 3986 host syntax.\n\nAs a result, values such as the following are accepted and returned through `req.host`:\n\n```text\nmyapp.com@evil.com\nevil.com/myapp.com\nevil.com#myapp.com\n```\n\nApplications that attempt to allowlist hosts using string prefix or suffix checks may therefore treat attacker-controlled hosts as trusted. For example:\n\n```ruby\nreq.host.start_with?(\"myapp.com\")\n```\n\naccepts:\n\n```text\nmyapp.com@evil.com\n```\n\nand:\n\n```ruby\nreq.host.end_with?(\"myapp.com\")\n```\n\naccepts:\n\n```text\nevil.com/myapp.com\n```\n\nWhen those values are later used to build absolute URLs or enforce origin restrictions, the application may produce attacker-controlled results.\n\n## Impact\n\nApplications that rely on `req.host`, `req.url`, or `req.base_url` may be affected if they perform naive host validation or assume Rack only returns RFC-valid hostnames.\n\nIn affected deployments, an attacker may be able to bypass host allowlists and poison generated links, redirects, or origin-dependent security decisions. This can enable attacks such as password reset link poisoning or other host header injection issues.\n\nThe practical impact depends on application behavior. If the application or reverse proxy already enforces strict host validation, exploitability may be reduced or eliminated.\n\n## Mitigation\n\n* Update to a patched version of Rack that rejects invalid authority characters in `Host`.\n* Enforce strict `Host` header validation at the reverse proxy or load balancer.\n* Do not rely on prefix or suffix string checks such as `start_with?` or `end_with?` for host allowlisting.\n* Use exact host allowlists, or exact subdomain boundary checks, after validating that the host is syntactically valid.",
"id": "GHSA-g2pf-xv49-m2h5",
"modified": "2026-05-13T16:19:21Z",
"published": "2026-04-02T20:36:40Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/rack/rack/security/advisories/GHSA-g2pf-xv49-m2h5"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34835"
},
{
"type": "PACKAGE",
"url": "https://github.com/rack/rack"
},
{
"type": "WEB",
"url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2026-34835.yml"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
"type": "CVSS_V3"
}
],
"summary": "Rack::Request accepts invalid Host characters, enabling host allowlist bypass"
}
GHSA-G47J-RW3X-MQXV
Vulnerability from github – Published: 2025-10-22 09:30 – Updated: 2025-10-22 09:30A low privileged remote attacker can corrupt the webserver users storage on the device by setting a sequence of unsupported characters which leads to deletion of all previously configured users and the creation of the default Administrator with a known default password.
{
"affected": [],
"aliases": [
"CVE-2025-41719"
],
"database_specific": {
"cwe_ids": [
"CWE-1286"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-10-22T07:15:33Z",
"severity": "HIGH"
},
"details": "A low privileged remote attacker can corrupt the webserver users storage on the device by setting a sequence of unsupported characters which leads to deletion of all previously configured users and the creation of the default Administrator with a known default password.",
"id": "GHSA-g47j-rw3x-mqxv",
"modified": "2025-10-22T09:30:19Z",
"published": "2025-10-22T09:30:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-41719"
},
{
"type": "WEB",
"url": "https://sauter.csaf-tp.certvde.com/.well-known/csaf/white/2025/vde-2025-060.json"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-GRX8-C238-5VMR
Vulnerability from github – Published: 2026-01-21 12:30 – Updated: 2026-02-23 12:31Denial-of-service vulnerability in M-Files Server versions before 26.1.15632.3 allows an authenticated attacker with vault administrator privileges to crash the M-Files Server process by calling a vulnerable API endpoint.
{
"affected": [],
"aliases": [
"CVE-2026-0663"
],
"database_specific": {
"cwe_ids": [
"CWE-1286"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-01-21T11:15:50Z",
"severity": "MODERATE"
},
"details": "Denial-of-service vulnerability in M-Files Server versions before\u00a026.1.15632.3\u00a0allows an authenticated attacker with vault administrator privileges to crash the M-Files Server process by calling a vulnerable API endpoint.",
"id": "GHSA-grx8-c238-5vmr",
"modified": "2026-02-23T12:31:29Z",
"published": "2026-01-21T12:30:30Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-0663"
},
{
"type": "WEB",
"url": "https://empower.m-files.com/security-advisories/CVE-2026-0663"
},
{
"type": "WEB",
"url": "https://product.m-files.com/security-advisories/cve-2026-0663"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-H2QV-FJ59-J46J
Vulnerability from github – Published: 2026-06-11 20:19 – Updated: 2026-08-13 15:34Impact
The HAProxy PROXY protocol v2 codec in netty leaks native or heap memory on every connection when a client sends a syntactically valid header containing nested PP2_TYPE_SSL TLVs (type-length-value records) at depth two or greater. The leak occurs on the successful parse path — no exception is thrown, the message fires downstream, the decoder removes itself, and the application releases the HAProxyMessage normally. Yet the underlying cumulation buffer (a pooled, potentially direct ByteBuf allocated by the channel) remains permanently pinned.
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 4.2.14.Final"
},
"package": {
"ecosystem": "Maven",
"name": "io.netty:netty-codec-haproxy"
},
"ranges": [
{
"events": [
{
"introduced": "4.2.0.Final"
},
{
"fixed": "4.2.15.Final"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 4.1.134.Final"
},
"package": {
"ecosystem": "Maven",
"name": "io.netty:netty-codec-haproxy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "4.1.135.Final"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-48059"
],
"database_specific": {
"cwe_ids": [
"CWE-1286",
"CWE-401"
],
"github_reviewed": true,
"github_reviewed_at": "2026-06-11T20:19:27Z",
"nvd_published_at": "2026-06-12T16:16:30Z",
"severity": "HIGH"
},
"details": "### Impact\nThe HAProxy PROXY protocol v2 codec in netty leaks native or heap memory on every connection when a client sends a syntactically valid header containing nested `PP2_TYPE_SSL` TLVs (type-length-value records) at depth two or greater. The leak occurs on the successful parse path \u2014 no exception is thrown, the message fires downstream, the decoder removes itself, and the application releases the `HAProxyMessage` normally. Yet the underlying cumulation buffer (a pooled, potentially direct `ByteBuf` allocated by the channel) remains permanently pinned.",
"id": "GHSA-h2qv-fj59-j46j",
"modified": "2026-08-13T15:34:09Z",
"published": "2026-06-11T20:19:27Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/netty/netty/security/advisories/GHSA-h2qv-fj59-j46j"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-48059"
},
{
"type": "WEB",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-48059.json"
},
{
"type": "WEB",
"url": "https://github.com/netty/netty/releases/tag/netty-4.2.15.Final"
},
{
"type": "WEB",
"url": "https://github.com/netty/netty/releases/tag/netty-4.1.135.Final"
},
{
"type": "PACKAGE",
"url": "https://github.com/netty/netty"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2488437"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-48059"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:54435"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:53806"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:53644"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:50085"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:48151"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:41951"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:37390"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:36820"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:34608"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:26586"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:26018"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:26017"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "Netty HAProxy: Unbalanced Reference Count in Nested PP2_TYPE_SSL TLV Parsing Leads to Memory Exhaustion"
}
GHSA-HFW6-RP3P-9R78
Vulnerability from github – Published: 2025-04-30 12:31 – Updated: 2025-04-30 12:31A vulnerability in the “Network Interfaces” functionality of the web application of ctrlX OS allows a remote authenticated (low-privileged) attacker to manipulate the wireless network configuration file via a crafted HTTP request.
{
"affected": [],
"aliases": [
"CVE-2025-24348"
],
"database_specific": {
"cwe_ids": [
"CWE-1286"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-04-30T12:15:21Z",
"severity": "MODERATE"
},
"details": "A vulnerability in the \u201cNetwork Interfaces\u201d functionality of the web application of ctrlX OS allows a remote authenticated (low-privileged) attacker to manipulate the wireless network configuration file via a crafted HTTP request.",
"id": "GHSA-hfw6-rp3p-9r78",
"modified": "2025-04-30T12:31:25Z",
"published": "2025-04-30T12:31:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-24348"
},
{
"type": "WEB",
"url": "https://psirt.bosch.com/security-advisories/BOSCH-SA-640452.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-HQ5P-JR85-6779
Vulnerability from github – Published: 2026-01-15 21:31 – Updated: 2026-01-15 21:31An Improper Validation of Syntactic Correctness of Input vulnerability in the Web-Filtering module of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).
If an SRX device configured for UTM Web-Filtering receives a specifically malformed SSL packet, this will cause an FPC crash and restart. This issue affects Junos OS on SRX Series:
- 23.2 versions from 23.2R2-S2 before 23.2R2-S5,
- 23.4 versions from 23.4R2-S1 before 23.4R2-S5,
- 24.2 versions before 24.2R2-S2,
- 24.4 versions before 24.4R1-S3, 24.4R2.
Earlier versions of Junos are also affected, but no fix is available.
{
"affected": [],
"aliases": [
"CVE-2026-21917"
],
"database_specific": {
"cwe_ids": [
"CWE-1286"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-01-15T21:16:07Z",
"severity": "HIGH"
},
"details": "An Improper Validation of Syntactic Correctness of Input vulnerability in the Web-Filtering module of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).\n\nIf an SRX device configured for UTM Web-Filtering receives a specifically malformed SSL packet, this will cause an FPC crash and restart.\nThis issue affects Junos OS on SRX Series:\n\n\n\n * 23.2 versions from 23.2R2-S2 before 23.2R2-S5,\u00a0\n * 23.4 versions from 23.4R2-S1 before 23.4R2-S5,\n * 24.2 versions before 24.2R2-S2,\n * 24.4 versions before 24.4R1-S3, 24.4R2.\n\n\nEarlier versions of Junos are also affected, but no fix is available.",
"id": "GHSA-hq5p-jr85-6779",
"modified": "2026-01-15T21:31:48Z",
"published": "2026-01-15T21:31:48Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-21917"
},
{
"type": "WEB",
"url": "https://kb.juniper.net/JSA105996"
},
{
"type": "WEB",
"url": "https://supportportal.juniper.net/JSA105996"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:A/V:X/RE:M/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-HWC4-2RMW-HCVQ
Vulnerability from github – Published: 2024-04-10 18:30 – Updated: 2024-04-10 18:30A vulnerability in Palo Alto Networks PAN-OS software enables a remote attacker to reboot PAN-OS firewalls when receiving Windows New Technology LAN Manager (NTLM) packets from Windows servers. Repeated attacks eventually cause the firewall to enter maintenance mode, which requires manual intervention to bring the firewall back online.
{
"affected": [],
"aliases": [
"CVE-2024-3384"
],
"database_specific": {
"cwe_ids": [
"CWE-1286"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-04-10T17:15:57Z",
"severity": "HIGH"
},
"details": "A vulnerability in Palo Alto Networks PAN-OS software enables a remote attacker to reboot PAN-OS firewalls when receiving Windows New Technology LAN Manager (NTLM) packets from Windows servers. Repeated attacks eventually cause the firewall to enter maintenance mode, which requires manual intervention to bring the firewall back online.",
"id": "GHSA-hwc4-2rmw-hcvq",
"modified": "2024-04-10T18:30:48Z",
"published": "2024-04-10T18:30:48Z",
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"type": "ADVISORY",
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}
]
}
GHSA-J3GX-2473-5FP8
Vulnerability from github – Published: 2026-03-07 00:30 – Updated: 2026-08-27 15:30url.Parse insufficiently validated the host/authority component and accepted some invalid URLs.
{
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GHSA-J87V-9H8F-Q7X4
Vulnerability from github – Published: 2026-03-19 03:30 – Updated: 2026-03-19 03:30IBM QRadar SIEM 7.5.0 through 7.5.0 Update Package 14 could allow an attacker with access to one tenant to access hostname data from another tenant's account.
{
"affected": [],
"aliases": [
"CVE-2025-13995"
],
"database_specific": {
"cwe_ids": [
"CWE-1286"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-03-19T03:16:01Z",
"severity": "MODERATE"
},
"details": "IBM QRadar SIEM\u00a07.5.0 through 7.5.0 Update Package 14 could allow an attacker with access to one tenant to access hostname data from another tenant\u0027s account.",
"id": "GHSA-j87v-9h8f-q7x4",
"modified": "2026-03-19T03:30:57Z",
"published": "2026-03-19T03:30:57Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-13995"
},
{
"type": "WEB",
"url": "https://www.ibm.com/support/pages/node/7266709"
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"type": "CVSS_V3"
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}
Mitigation MIT-5
Strategy: Input Validation
- Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
- When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
- Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
CAPEC-66: SQL Injection
This attack exploits target software that constructs SQL statements based on user input. An attacker crafts input strings so that when the target software constructs SQL statements based on the input, the resulting SQL statement performs actions other than those the application intended. SQL Injection results from failure of the application to appropriately validate input.
CAPEC-676: NoSQL Injection
An adversary targets software that constructs NoSQL statements based on user input or with parameters vulnerable to operator replacement in order to achieve a variety of technical impacts such as escalating privileges, bypassing authentication, and/or executing code.