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CVE-2026-43938

YetAnotherForum.NET (YAF.NET) is a C# ASP.NET forum. Prior to 4.0.5 and 3.2.12, the application's database logger (YAFNET.Core/Logger/DbLogger.cs) captures the incoming request's User-Agent header into a JObject, serializes it with JsonConvert, and stores the result in the EventLog.Description column whenever an event (e.g., an unhandled exception) is logged. The admin event-log page (YetAnotherForum.NET/Pages/Admin/EventLog.cshtml.cs) later deserializes that JSON in FormatStackTrace() and inter
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:ec4b60192ef6ede6563f28a56096c272c6cf33812750052fab39c0857c9e39cf
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 3 assertions

{"cweId":"CWE-116","description":"CWE-116: Improper Encoding or Escaping of Output","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e524f0b1992f8a228b6037d19de27771cdf227f1433307fbd395b986db49866d · sha256:ea123abf0bfb3819… · /containers/cna/problemTypes/2/descriptions/0

{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e524f0b1992f8a228b6037d19de27771cdf227f1433307fbd395b986db49866d · sha256:ea123abf0bfb3819… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-80","description":"CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e524f0b1992f8a228b6037d19de27771cdf227f1433307fbd395b986db49866d · sha256:ea123abf0bfb3819… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"YAFNET","vendor":"YAFNET","versions":[{"status":"affected","version":">= 4.0.0-beta.1, < 4.0.5"},{"status":"affected","version":"< 3.2.12"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e524f0b1992f8a228b6037d19de27771cdf227f1433307fbd395b986db49866d · sha256:ea123abf0bfb3819… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e524f0b1992f8a228b6037d19de27771cdf227f1433307fbd395b986db49866d · sha256:ea123abf0bfb3819… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

3 source assertions
{"cweId":"CWE-116","description":"CWE-116: Improper Encoding or Escaping of Output","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e524f0b1992f8a228b6037d19de27771cdf227f1433307fbd395b986db49866d · sha256:ea123abf0bfb3819… · /containers/cna/problemTypes/2/descriptions/0
{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e524f0b1992f8a228b6037d19de27771cdf227f1433307fbd395b986db49866d · sha256:ea123abf0bfb3819… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-80","description":"CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e524f0b1992f8a228b6037d19de27771cdf227f1433307fbd395b986db49866d · sha256:ea123abf0bfb3819… · /containers/cna/problemTypes/1/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/YAFNET/YAFNET/security/advisories/GHSA-33gv-fc78-qgf5","tags":["x_refsource_CONFIRM"],"url":"https://github.com/YAFNET/YAFNET/security/advisories/GHSA-33gv-fc78-qgf5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e524f0b1992f8a228b6037d19de27771cdf227f1433307fbd395b986db49866d · sha256:ea123abf0bfb3819… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/YAFNET/YAFNET/security/advisories/GHSA-33gv-fc78-qgf5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e524f0b1992f8a228b6037d19de27771cdf227f1433307fbd395b986db49866d · sha256:ea123abf0bfb3819… · /containers/adp/0/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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