Common Weakness Enumeration

CWE-918

Allowed

Server-Side Request Forgery (SSRF)

Abstraction: Base · Status: Incomplete

API response cwe.mitre.org

The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

6492 vulnerabilities reference this CWE, most recent first.

CVE-2026-104817 (GCVE-0-2026-104817)

Vulnerability from cvelistv5 – Published: 2026-10-13 18:39 – Updated: 2026-10-13 19:04
VLAI
Title
Misskey: Lack of rate limiting and size restrictions in RSS fetching API
Summary
Misskey is an open source, federated social media platform. From 12.112.1 until 2026.7.0, the unauthenticated fetch-rss API lacks rate limiting and response-size restrictions and performs synchronous XML parsing. An attacker can trigger unbounded outbound HTTP requests and synchronous parsing, exhausting instance resources, amplifying requests toward third-party servers, or probing network-reachable services even when federation is disabled. This issue is fixed in version 2026.7.0.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:L/SI:N/SA:L
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-13 19:03 UTC
CWE
  • CWE-405 - Asymmetric Resource Consumption (Amplification)
  • CWE-770 - Allocation of Resources Without Limits or Throttling
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7660 records in the last 180 days details
References
Impacted products
Vendor Product Version
misskey-dev misskey Affected: >= 12.0.0, <= 13.14.2
Affected: >= 2023.9.0-beta.1, < 2026.7.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-104636 (GCVE-0-2026-104636)

Vulnerability from cvelistv5 – Published: 2026-10-06 19:24 – Updated: 2026-10-07 20:13
VLAI
Title
Gitea SSRF through Git HTTP redirects in mirrors and fetches
Summary
Gitea validated the initial remote URL for push mirrors, wiki remote checks, and fetches of migrated pull request heads, but the subsequent raw Git operations followed HTTP redirects without revalidating the destination. A repository administrator using a policy-allowed endpoint that redirects could make Gitea's Git client send requests to an address that the outbound host policy would otherwise block. The impact depends on the configured policy and the internal services reachable from the server.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-07 20:13 UTC
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
Gitea CNA under the mitre root
CNA scorecard C 61/100 over 165 records in the last 180 days details
References
Impacted products
Vendor Product Version
Gitea Gitea Affected: 0 , ≤ 1.27.3 (semver)
Create a notification for this product.
Credits
https://github.com/ihopenre-eng https://github.com/ElectQ https://github.com/TheFox0x7 https://github.com/silverwind https://github.com/bircni https://github.com/wxiaoguang
Show details on NVD website
To clipboard 

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CVE-2026-104470 (GCVE-0-2026-104470)

Vulnerability from cvelistv5 – Published: 2026-10-02 11:38 – Updated: 2026-10-04 14:59
VLAI
Title
YesWiki before 4.6.7 SSRF via Bazar valeur Action url Parameter
Summary
YesWiki before 4.6.7 contains a server-side request forgery vulnerability that allows page editors to make the server fetch arbitrary URLs via the url parameter of the Bazar valeur action. Attackers can embed the action with a champ parameter in wiki markup to reach loopback or internal services and partially read responses rendered into the page.
Severity
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N
5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-02 15:19 UTC
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6527 records in the last 180 days details
References
Impacted products
Vendor Product Version
YesWiki yeswiki Affected: 0 , < 4.6.7 (semver)
Unaffected: 4.6.7 (semver)
    cpe:2.3:a:yeswiki:yeswiki:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-01 00:00
Credits
sondt99
Show details on NVD website
To clipboard 

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CVE-2026-104464 (GCVE-0-2026-104464)

Vulnerability from cvelistv5 – Published: 2026-10-02 11:38 – Updated: 2026-10-02 14:55
VLAI
Title
YesWiki before 4.6.7 SSRF via Bazar abonnements sync actor parameter
Summary
YesWiki before 4.6.7 contains a server-side request forgery vulnerability that allows unauthenticated attackers to make server-side GET requests by supplying an unvalidated actor URL to the Bazar abonnements sync action. Attackers can target internal hosts or cloud metadata endpoints and chain attacker-controlled outbox first/next links, with fetched responses stored as readable Bazar entries.
Severity
8.8 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N
8.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-02 14:54 UTC
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6527 records in the last 180 days details
References
Impacted products
Vendor Product Version
YesWiki yeswiki Affected: 0 , < 4.6.7 (semver)
Unaffected: 4.6.7 (semver)
    cpe:2.3:a:yeswiki:yeswiki:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-01 00:00
Credits
manus-use
Show details on NVD website
To clipboard 

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CVE-2026-104463 (GCVE-0-2026-104463)

Vulnerability from cvelistv5 – Published: 2026-10-02 11:38 – Updated: 2026-10-02 13:41
VLAI
Title
YesWiki before 4.6.7 Unauthenticated SSRF via ActivityPub Inbox
Summary
YesWiki before 4.6.7 contains a server-side request forgery vulnerability that allows unauthenticated attackers to trigger server requests by sending signed Follow activities to the public forms actor inbox route. Attackers sign requests with their own keyId while supplying internal actor URLs in the body, reaching internal hosts or cloud metadata via blind GET and POST requests.
Severity
8.3 (High)
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N
7 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-02 13:39 UTC
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6527 records in the last 180 days details
References
Impacted products
Vendor Product Version
YesWiki yeswiki Affected: 0 , < 4.6.7 (semver)
Unaffected: 4.6.7 (semver)
    cpe:2.3:a:yeswiki:yeswiki:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-01 00:00
Credits
manus-use
Show details on NVD website
To clipboard 

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CVE-2026-104459 (GCVE-0-2026-104459)

Vulnerability from cvelistv5 – Published: 2026-10-02 11:38 – Updated: 2026-10-02 13:36
VLAI
Title
YesWiki before 4.6.7 SSRF via ActivityPub WebFinger actor_handle
Summary
YesWiki before 4.6.7 contains a server-side request forgery vulnerability in WebfingerService that allows unauthenticated attackers to trigger HTTPS requests to internal hosts. Attackers can POST a crafted actor_handle with a numeric host and port to the abonnements view to probe internal HTTPS services and ports.
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-02 13:35 UTC
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6527 records in the last 180 days details
References
Impacted products
Vendor Product Version
YesWiki yeswiki Affected: 0 , < 4.6.7 (semver)
Unaffected: 4.6.7 (semver)
    cpe:2.3:a:yeswiki:yeswiki:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-01 00:00
Credits
manus-use
Show details on NVD website
To clipboard 

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CVE-2026-104458 (GCVE-0-2026-104458)

Vulnerability from cvelistv5 – Published: 2026-10-02 11:38 – Updated: 2026-10-02 14:10
VLAI
Title
YesWiki before 4.6.7 SSRF Guard Bypass via IPv6 Transition Addresses
Summary
YesWiki before 4.6.7 contains a server-side request forgery vulnerability in validateKeyIdUrl() that allows unauthenticated attackers to bypass the SSRF guard using 6to4, NAT64, or IPv4-compatible IPv6 addresses. Attackers can send a crafted Signature keyId to the public actor inbox route to reach cloud metadata, loopback services, or internal hosts.
Severity
8.3 (High)
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
6.5 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-02 14:09 UTC
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6527 records in the last 180 days details
References
Impacted products
Vendor Product Version
YesWiki yeswiki Affected: 0 , < 4.6.7 (semver)
Unaffected: 4.6.7 (semver)
    cpe:2.3:a:yeswiki:yeswiki:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-01 00:00
Credits
tonghuaroot
Show details on NVD website
To clipboard 

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CVE-2026-104442 (GCVE-0-2026-104442)

Vulnerability from cvelistv5 – Published: 2026-10-02 11:38 – Updated: 2026-10-02 15:22
VLAI
Title
YesWiki before 4.6.7 Unauthenticated SSRF via syndication Action
Summary
YesWiki before 4.6.7 contains an unauthenticated server-side request forgery vulnerability that allows remote attackers to make the server fetch arbitrary URLs by supplying a syndication action through the render handler's content parameter. Attackers can target internal hosts and ports, read back fetched feed content in the rendered page, and cause feed enclosures to be downloaded into the files directory.
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L
5.8 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-02 15:21 UTC
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6527 records in the last 180 days details
References
Impacted products
Vendor Product Version
YesWiki yeswiki Affected: 0 , < 4.6.7 (semver)
Unaffected: 4.6.7 (semver)
    cpe:2.3:a:yeswiki:yeswiki:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-01 00:00
Credits
skeletonsec
Show details on NVD website
To clipboard 

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CVE-2026-104441 (GCVE-0-2026-104441)

Vulnerability from cvelistv5 – Published: 2026-10-02 11:38 – Updated: 2026-10-06 16:11
VLAI
Title
YesWiki before 4.6.7 Unauthenticated SSRF via valeur Action
Summary
YesWiki before 4.6.7 contains an unauthenticated server-side request forgery vulnerability that allows remote attackers to make the server fetch arbitrary hosts and ports via the {{valeur}} action's url parameter. Attackers can submit the action through the content parameter of handlers/page/render.php to probe internal HTTP services and read back response content matching fiche markup.
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-06 16:11 UTC
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6527 records in the last 180 days details
References
Impacted products
Vendor Product Version
YesWiki yeswiki Affected: 0 , < 4.6.7 (semver)
Unaffected: 4.6.7 (semver)
    cpe:2.3:a:yeswiki:yeswiki:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-01 00:00
Credits
skeletonsec
Show details on NVD website
To clipboard 

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CVE-2026-104440 (GCVE-0-2026-104440)

Vulnerability from cvelistv5 – Published: 2026-10-02 11:38 – Updated: 2026-10-02 14:56
VLAI
Title
YesWiki before 4.6.7 Blind SSRF via bazarlist API idtypeannonce Parameter
Summary
YesWiki before 4.6.7 contains a blind server-side request forgery vulnerability that allows unauthenticated attackers to make arbitrary server-side requests via the idtypeannonce parameter of /api/entries/bazarlist. Because isValidURL() always returns true, attackers can supply internal URLs fetched by curl in loadURLContent() to probe internal networks and reach internal services or metadata endpoints.
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-02 14:56 UTC
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6527 records in the last 180 days details
References
Impacted products
Vendor Product Version
YesWiki yeswiki Affected: 0 , < 4.6.7 (semver)
Unaffected: 4.6.7 (semver)
    cpe:2.3:a:yeswiki:yeswiki:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-01 00:00
Credits
skeletonsec
Show details on NVD website
To clipboard 

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            "subConfidentialityImpact": "LOW",
            "subIntegrityImpact": "LOW",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "LOW",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS"
        },
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-918",
              "description": "Server-Side Request Forgery (SSRF)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-02T11:38:15.830Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "name": "GitHub Security Advisory (GHSA-gw65-cpc7-hww6)",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://github.com/YesWiki/yeswiki/security/advisories/GHSA-gw65-cpc7-hww6"
        },
        {
          "name": "VulnCheck Advisory: YesWiki before 4.6.7 Blind SSRF via bazarlist API idtypeannonce Parameter",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/yeswiki-before-4.6.7-blind-ssrf-via-bazarlist-api-idtypeannonce-parameter"
        }
      ],
      "title": "YesWiki before 4.6.7 Blind SSRF via bazarlist API idtypeannonce Parameter",
      "x_generator": {
        "engine": "vulncheck-endgame"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-104440",
    "datePublished": "2026-10-02T11:38:15.830Z",
    "dateReserved": "2026-10-02T00:53:03.850Z",
    "dateUpdated": "2026-10-02T14:56:26.908Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

No mitigation information available for this CWE.

CAPEC-664: Server Side Request Forgery

An adversary exploits improper input validation by submitting maliciously crafted input to a target application running on a server, with the goal of forcing the server to make a request either to itself, to web services running in the server’s internal network, or to external third parties. If successful, the adversary’s request will be made with the server’s privilege level, bypassing its authentication controls. This ultimately allows the adversary to access sensitive data, execute commands on the server’s network, and make external requests with the stolen identity of the server. Server Side Request Forgery attacks differ from Cross Site Request Forgery attacks in that they target the server itself, whereas CSRF attacks exploit an insecure user authentication mechanism to perform unauthorized actions on the user's behalf.

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