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CVE-2026-43937

YetAnotherForum.NET (YAF.NET) is a C# ASP.NET forum. Prior to 4.0.5, Any admin OnPost… handler executes its side effects before the ResultFilterAttribute rewrites the response to a 302 to /Info/4. The most impactful abuse is /Admin/RunSql, whose OnPostRunQuery binds Editor from the POST body and passes it straight to IDbAccess.RunSql with no caller check, yielding arbitrary SQL execution for any low-privileged user. This vulnerability is fixed in 4.0.5.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:cbbc1ed14f804cdad5a86095c2b68aacd4d44681d398bf15075cc35c05ee77cc
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-89","description":"CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e3c1818a035aa47e68d23c7205ac5d01b6617da6b40ee874ba27371961501008 · sha256:22b19860e75b9be0… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-841","description":"CWE-841: Improper Enforcement of Behavioral Workflow","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e3c1818a035aa47e68d23c7205ac5d01b6617da6b40ee874ba27371961501008 · sha256:22b19860e75b9be0… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"YAFNET","vendor":"YAFNET","versions":[{"status":"affected","version":"< 4.0.5"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e3c1818a035aa47e68d23c7205ac5d01b6617da6b40ee874ba27371961501008 · sha256:22b19860e75b9be0… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e3c1818a035aa47e68d23c7205ac5d01b6617da6b40ee874ba27371961501008 · sha256:22b19860e75b9be0… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-89","description":"CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e3c1818a035aa47e68d23c7205ac5d01b6617da6b40ee874ba27371961501008 · sha256:22b19860e75b9be0… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-841","description":"CWE-841: Improper Enforcement of Behavioral Workflow","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e3c1818a035aa47e68d23c7205ac5d01b6617da6b40ee874ba27371961501008 · sha256:22b19860e75b9be0… · /containers/cna/problemTypes/1/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/YAFNET/YAFNET/security/advisories/GHSA-xhw7-j96h-c3g5","tags":["x_refsource_CONFIRM"],"url":"https://github.com/YAFNET/YAFNET/security/advisories/GHSA-xhw7-j96h-c3g5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e3c1818a035aa47e68d23c7205ac5d01b6617da6b40ee874ba27371961501008 · sha256:22b19860e75b9be0… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/YAFNET/YAFNET/security/advisories/GHSA-xhw7-j96h-c3g5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e3c1818a035aa47e68d23c7205ac5d01b6617da6b40ee874ba27371961501008 · sha256:22b19860e75b9be0… · /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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