Common Weakness Enumeration
CWE-835
AllowedLoop with Unreachable Exit Condition ('Infinite Loop')
Abstraction: Base · Status: Incomplete
The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.
1314 vulnerabilities reference this CWE, most recent first.
GHSA-7V6R-J8W7-V48J
Vulnerability from github – Published: 2022-05-13 01:46 – Updated: 2022-05-13 01:46
VLAI
Details
The tcp_splice_read function in net/ipv4/tcp.c in the Linux kernel before 4.9.11 allows remote attackers to cause a denial of service (infinite loop and soft lockup) via vectors involving a TCP packet with the URG flag.
Severity
7.5 (High)
{
"affected": [],
"aliases": [
"CVE-2017-6214"
],
"database_specific": {
"cwe_ids": [
"CWE-835"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-02-23T17:59:00Z",
"severity": "HIGH"
},
"details": "The tcp_splice_read function in net/ipv4/tcp.c in the Linux kernel before 4.9.11 allows remote attackers to cause a denial of service (infinite loop and soft lockup) via vectors involving a TCP packet with the URG flag.",
"id": "GHSA-7v6r-j8w7-v48j",
"modified": "2022-05-13T01:46:26Z",
"published": "2022-05-13T01:46:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-6214"
},
{
"type": "WEB",
"url": "https://github.com/torvalds/linux/commit/ccf7abb93af09ad0868ae9033d1ca8108bdaec82"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2017:1372"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2017:1615"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2017:1616"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2017:1647"
},
{
"type": "WEB",
"url": "https://source.android.com/security/bulletin/2017-09-01"
},
{
"type": "WEB",
"url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ccf7abb93af09ad0868ae9033d1ca8108bdaec82"
},
{
"type": "WEB",
"url": "http://www.debian.org/security/2017/dsa-3804"
},
{
"type": "WEB",
"url": "http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.11"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/96421"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1037897"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-7VGW-QF5J-7533
Vulnerability from github – Published: 2022-05-24 16:50 – Updated: 2022-06-03 00:01
VLAI
Details
Zipios before 0.1.7 does not properly handle certain malformed zip archives and can go into an infinite loop, causing a denial of service. This is related to zipheadio.h:readUint32() and zipfile.cpp:Zipfile::Zipfile().
Severity
6.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2019-13453"
],
"database_specific": {
"cwe_ids": [
"CWE-835"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-07-17T15:15:00Z",
"severity": "MODERATE"
},
"details": "Zipios before 0.1.7 does not properly handle certain malformed zip archives and can go into an infinite loop, causing a denial of service. This is related to zipheadio.h:readUint32() and zipfile.cpp:Zipfile::Zipfile().",
"id": "GHSA-7vgw-qf5j-7533",
"modified": "2022-06-03T00:01:41Z",
"published": "2022-05-24T16:50:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-13453"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2022/05/msg00041.html"
},
{
"type": "WEB",
"url": "https://salvatoresecurity.com/fun-with-fuzzers-how-i-discovered-three-vulnerabilities-part-2-of-3"
},
{
"type": "WEB",
"url": "https://sourceforge.net/p/zipios/news/2019/07/version-017-cve-"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/109282"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-7W3M-9PFQ-8M82
Vulnerability from github – Published: 2025-03-04 03:31 – Updated: 2025-04-10 21:31
VLAI
Details
In NGINX Unit before version 1.34.2 with the Java Language Module in use, undisclosed requests can lead to an infinite loop and cause an increase in CPU resource utilization. This vulnerability allows a remote attacker to cause a degradation that can lead to a limited denial-of-service (DoS). There is no control plane exposure; this is a data plane issue only. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Severity
5.3 (Medium)
{
"affected": [],
"aliases": [
"CVE-2025-1695"
],
"database_specific": {
"cwe_ids": [
"CWE-835"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-03-04T01:15:10Z",
"severity": "MODERATE"
},
"details": "In NGINX Unit before version 1.34.2 with the Java Language Module in use, undisclosed requests can lead to an infinite loop and cause an increase in CPU resource utilization. This vulnerability allows a remote attacker to cause a degradation that can lead to a limited denial-of-service (DoS). \u00a0There is no control plane exposure; this is a data plane issue only. \u00a0Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.",
"id": "GHSA-7w3m-9pfq-8m82",
"modified": "2025-04-10T21:31:07Z",
"published": "2025-03-04T03:31:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-1695"
},
{
"type": "WEB",
"url": "https://my.f5.com/manage/s/article/K000149959"
}
],
"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:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/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-7W5X-HRQM-74C2
Vulnerability from github – Published: 2026-09-09 18:07 – Updated: 2026-09-09 18:07
VLAI
Summary
smol-toml: Denial of Service via malformed TOML documents
Details
Summary
parse() can be forced into an infinite loop when a value inside an array or inline table is followed by a comment that has no trailing newline (i.e. the comment "ends" the document).
The library fails to exit an internal loop when attempting to find the end of the structure, resetting its cursor to the beginning of the string instead. This causes the parser to indefinitely hang, compromising the availability of the service.
Proof of concept
import { parse } from 'smol-toml'
parse('a=[1 #') // never returns; CPU pinned at 100%
Impact
Applications which parse arbitrary TOML documents can suffer major availability issues if they receive malicious input. This issue is particularly severe for these use-cases, and it is strongly advised to upgrade to an up-to-date version of the library as soon as possible.
If your use-case does not involve parsing arbitrary TOML documents from untrusted sources, the impact is much lower in practice, although it's still advisable to update to version 1.7.1.
Patches
Version 1.7.1 properly breaks out of the loop in these situations and throws the expected TomlError.
Workarounds
None that don't involve refactors. Update the library as soon as possible if your use-case involves parsing arbitrary TOML documents from untrusted sources.
Reported By : Ravindu Lakmina Munaweera
Severity
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 1.7.0"
},
"package": {
"ecosystem": "npm",
"name": "smol-toml"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.7.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-85730"
],
"database_specific": {
"cwe_ids": [
"CWE-606",
"CWE-835"
],
"github_reviewed": true,
"github_reviewed_at": "2026-09-09T18:07:11Z",
"nvd_published_at": "2026-09-04T16:18:23Z",
"severity": "HIGH"
},
"details": "### Summary\n`parse()` can be forced into an infinite loop when a value inside an array or inline table is followed by a comment that has no trailing newline (i.e. the comment \"ends\" the document).\n\nThe library fails to exit an internal loop when attempting to find the end of the structure, resetting its cursor to the beginning of the string instead. This causes the parser to indefinitely hang, compromising the availability of the service.\n\n### Proof of concept\n\n```js\nimport { parse } from \u0027smol-toml\u0027\nparse(\u0027a=[1 #\u0027) // never returns; CPU pinned at 100%\n```\n\n### Impact\n\nApplications which parse arbitrary TOML documents can suffer major availability issues if they receive malicious input. This issue is particularly severe for these use-cases, and it is **strongly advised** to upgrade to an up-to-date version of the library as soon as possible.\n\nIf your use-case does not involve parsing arbitrary TOML documents from untrusted sources, the impact is much lower in practice, although it\u0027s still advisable to update to version 1.7.1.\n\n### Patches\n\nVersion 1.7.1 properly breaks out of the loop in these situations and throws the expected `TomlError`.\n\n### Workarounds\n\nNone that don\u0027t involve refactors. Update the library **as soon as possible** if your use-case involves parsing arbitrary TOML documents from untrusted sources.\n\n\nReported By : [Ravindu Lakmina Munaweera](https://www.linkedin.com/in/ravindulakmina/)",
"id": "GHSA-7w5x-hrqm-74c2",
"modified": "2026-09-09T18:07:12Z",
"published": "2026-09-09T18:07:11Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/squirrelchat/smol-toml/security/advisories/GHSA-7w5x-hrqm-74c2"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-85730"
},
{
"type": "WEB",
"url": "https://github.com/squirrelchat/smol-toml/commit/30f5c367d946b695f379b5d4f0946b2f0a0a8c2f"
},
{
"type": "PACKAGE",
"url": "https://github.com/squirrelchat/smol-toml"
},
{
"type": "WEB",
"url": "https://github.com/squirrelchat/smol-toml/releases/tag/v1.7.1"
},
{
"type": "WEB",
"url": "https://medium.com/@ravindu.lakmina1/seven-bytes-that-freeze-a-node-js-server-forever-the-story-of-cve-2026-85730-3213328b38f0"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "smol-toml: Denial of Service via malformed TOML documents"
}
GHSA-7WPV-4QH2-R4FV
Vulnerability from github – Published: 2024-11-12 18:30 – Updated: 2024-11-12 18:30
VLAI
Details
An infinite loop in Ivanti Avalanche before 6.4.6 allows a remote unauthenticated attacker to cause a denial of service.
Severity
7.5 (High)
{
"affected": [],
"aliases": [
"CVE-2024-50320"
],
"database_specific": {
"cwe_ids": [
"CWE-835"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-11-12T16:15:23Z",
"severity": "HIGH"
},
"details": "An infinite loop in Ivanti Avalanche before 6.4.6 allows a remote unauthenticated attacker to cause a denial of service.",
"id": "GHSA-7wpv-4qh2-r4fv",
"modified": "2024-11-12T18:30:56Z",
"published": "2024-11-12T18:30:56Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-50320"
},
{
"type": "WEB",
"url": "https://forums.ivanti.com/s/article/Security-Advisory-Ivanti-Avalanche-Multiple-CVEs-Q4-2024-Release"
}
],
"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"
}
]
}
GHSA-7X3M-MXJP-769R
Vulnerability from github – Published: 2022-05-13 01:53 – Updated: 2022-05-13 01:53
VLAI
Details
In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, epan/dissectors/packet-lltd.c had an infinite loop that was addressed by using a correct integer data type.
Severity
7.5 (High)
{
"affected": [],
"aliases": [
"CVE-2018-7326"
],
"database_specific": {
"cwe_ids": [
"CWE-835"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-02-23T22:29:00Z",
"severity": "HIGH"
},
"details": "In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, epan/dissectors/packet-lltd.c had an infinite loop that was addressed by using a correct integer data type.",
"id": "GHSA-7x3m-mxjp-769r",
"modified": "2022-05-13T01:53:20Z",
"published": "2022-05-13T01:53:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-7326"
},
{
"type": "WEB",
"url": "https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14419"
},
{
"type": "WEB",
"url": "https://code.wireshark.org/review/gitweb?p=wireshark.git;a=commit;h=293b999425e998d6cde0d9149648e421ea7687d0"
},
{
"type": "WEB",
"url": "https://www.wireshark.org/security/wnpa-sec-2018-06.html"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/103158"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-7X8Q-X29W-WPG4
Vulnerability from github – Published: 2022-05-13 01:47 – Updated: 2022-05-13 01:47
VLAI
Details
A memory exhaustion vulnerability exists in Asterisk Open Source 13.x before 13.15.1 and 14.x before 14.4.1 and Certified Asterisk 13.13 before 13.13-cert4, which can be triggered by sending specially crafted SCCP packets causing an infinite loop and leading to memory exhaustion (by message logging in that loop).
Severity
7.5 (High)
{
"affected": [],
"aliases": [
"CVE-2017-9358"
],
"database_specific": {
"cwe_ids": [
"CWE-835"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-06-02T05:29:00Z",
"severity": "HIGH"
},
"details": "A memory exhaustion vulnerability exists in Asterisk Open Source 13.x before 13.15.1 and 14.x before 14.4.1 and Certified Asterisk 13.13 before 13.13-cert4, which can be triggered by sending specially crafted SCCP packets causing an infinite loop and leading to memory exhaustion (by message logging in that loop).",
"id": "GHSA-7x8q-x29w-wpg4",
"modified": "2022-05-13T01:47:57Z",
"published": "2022-05-13T01:47:57Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-9358"
},
{
"type": "WEB",
"url": "https://bugs.debian.org/863906"
},
{
"type": "WEB",
"url": "http://downloads.asterisk.org/pub/security/AST-2017-004.txt"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/98573"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1038531"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-827X-XJFM-CW2C
Vulnerability from github – Published: 2023-07-18 15:30 – Updated: 2026-10-14 12:31
VLAI
Details
In elfutils 0.183, an infinite loop was found in the function handle_symtab in readelf.c .Which allows attackers to cause a denial of service (infinite loop) via crafted file.
Severity
5.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2021-33294"
],
"database_specific": {
"cwe_ids": [
"CWE-835"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-07-18T14:15:11Z",
"severity": "MODERATE"
},
"details": "In elfutils 0.183, an infinite loop was found in the function handle_symtab in readelf.c .Which allows attackers to cause a denial of service (infinite loop) via crafted file.",
"id": "GHSA-827x-xjfm-cw2c",
"modified": "2026-10-14T12:31:25Z",
"published": "2023-07-18T15:30:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-33294"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-398330.html"
},
{
"type": "WEB",
"url": "https://sourceware.org/bugzilla/show_bug.cgi?id=27501"
},
{
"type": "WEB",
"url": "https://sourceware.org/pipermail/elfutils-devel/2021q1/003607.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-8299-XH3W-XHX5
Vulnerability from github – Published: 2026-07-16 18:31 – Updated: 2026-07-17 15:32
VLAI
Details
XML::Bare versions through 0.53 for Perl will hang in an infinite loop when parsing malformed attributes.
The parserc_parse function never advances the attribute-parse state cursor on certain malformed attribute forms, looping forever.
Nameless attributes such as "<a ='c'>" or unbalanced quotes "<a b='''''''c'>" can trigger this condition.
Severity
7.5 (High)
{
"affected": [],
"aliases": [
"CVE-2026-13401"
],
"database_specific": {
"cwe_ids": [
"CWE-835"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-16T17:16:55Z",
"severity": "HIGH"
},
"details": "XML::Bare versions through 0.53 for Perl will hang in an infinite loop when parsing malformed attributes.\n\nThe parserc_parse function never advances the attribute-parse state cursor on certain malformed attribute forms, looping forever.\n\nNameless attributes such as \"\u003ca =\u0027c\u0027\u003e\" or unbalanced quotes \"\u003ca b=\u0027\u0027\u0027\u0027\u0027\u0027\u0027c\u0027\u003e\" can trigger this condition.",
"id": "GHSA-8299-xh3w-xhx5",
"modified": "2026-07-17T15:32:23Z",
"published": "2026-07-16T18:31:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-13401"
},
{
"type": "WEB",
"url": "https://github.com/nanoscopic/perl-XML-Bare/pull/2"
},
{
"type": "WEB",
"url": "https://security.metacpan.org/patches/X/XML-Bare/0.53/CVE-2026-13401-r1.patch"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2026/07/16/2"
}
],
"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"
}
]
}
GHSA-83G2-8M93-V3W7
Vulnerability from github – Published: 2022-05-24 19:03 – Updated: 2024-05-20 20:30
VLAI
Summary
golang.org/x/net/html Infinite Loop vulnerability
Details
Go through 1.15.12 and 1.16.x through 1.16.4 has a golang.org/x/net/html infinite loop via crafted ParseFragment input.
Severity
7.5 (High)
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "golang.org/x/net"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.0.0-20210520170846-37e1c6afe023"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2021-33194"
],
"database_specific": {
"cwe_ids": [
"CWE-835"
],
"github_reviewed": true,
"github_reviewed_at": "2023-02-08T00:33:11Z",
"nvd_published_at": "2021-05-26T15:15:00Z",
"severity": "HIGH"
},
"details": "Go through 1.15.12 and 1.16.x through 1.16.4 has a golang.org/x/net/html infinite loop via crafted ParseFragment input.",
"id": "GHSA-83g2-8m93-v3w7",
"modified": "2024-05-20T20:30:54Z",
"published": "2022-05-24T19:03:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-33194"
},
{
"type": "WEB",
"url": "https://github.com/golang/net/commit/37e1c6afe02340126705deced573a85ab75209d7"
},
{
"type": "WEB",
"url": "https://go.dev/cl/311090"
},
{
"type": "WEB",
"url": "https://go.dev/issue/46288"
},
{
"type": "WEB",
"url": "https://go.googlesource.com/net/+/37e1c6afe02340126705deced573a85ab75209d7"
},
{
"type": "WEB",
"url": "https://groups.google.com/g/golang-announce/c/wPunbCPkWUg"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4CHKSFMHZVOBCZSSVRE3UEYNKARTBMTM"
},
{
"type": "WEB",
"url": "https://pkg.go.dev/vuln/GO-2021-0238"
}
],
"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"
}
],
"summary": "golang.org/x/net/html Infinite Loop vulnerability"
}
No mitigation information available for this CWE.
No CAPEC attack patterns related to this CWE.