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CVE-2026-35056

XenForo before 2.3.9 and before 2.2.18 allows remote code execution (RCE) by authenticated, but malicious, admin users. An attacker with admin panel access can execute arbitrary code on the server.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:f2cf07734736d4d8ba5a09605978e658497f136fbfc957911dba88eab69c6835
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 2 assertions

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.2,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/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:v2:1f9965d7fa6c360caa25494918ce71f78b48d4435145c016f469090c5b68bf82 · sha256:eac37719c0a45fe8… · /containers/cna/metrics/1/cvssV3_1

{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.6,"baseSeverity":"HIGH","privilegesRequired":"HIGH","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIG…

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:1f9965d7fa6c360caa25494918ce71f78b48d4435145c016f469090c5b68bf82 · sha256:eac37719c0a45fe8… · /containers/cna/metrics/0/cvssV4_0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","product":"XenForo","vendor":"XenForo","versions":[{"lessThan":"2.3.9","status":"affected","version":"2.3.0","versionType":"semver"},{"lessThan":"2.2.18","status":"affected","version":"0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:1f9965d7fa6c360caa25494918ce71f78b48d4435145c016f469090c5b68bf82 · sha256:eac37719c0a45fe8… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.2,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/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:v2:1f9965d7fa6c360caa25494918ce71f78b48d4435145c016f469090c5b68bf82 · sha256:eac37719c0a45fe8… · /containers/cna/metrics/1/cvssV3_1
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.6,"baseSeverity":"HIGH","privilegesRequired":"HIGH","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIG…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:1f9965d7fa6c360caa25494918ce71f78b48d4435145c016f469090c5b68bf82 · sha256:eac37719c0a45fe8… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-94","description":"CWE-94: Improper Control of Generation of Code ('Code Injection')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:1f9965d7fa6c360caa25494918ce71f78b48d4435145c016f469090c5b68bf82 · sha256:eac37719c0a45fe8… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"VulnCheck Advisory: XenForo Remote Code Execution via Authenticated Admin","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/xenforo-remote-code-execution-via-authenticated-admin"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:1f9965d7fa6c360caa25494918ce71f78b48d4435145c016f469090c5b68bf82 · sha256:eac37719c0a45fe8… · /containers/cna/references/1
{"name":"XenForo 2.3.9 (inc XFMG) & 2.2.18 Released (Security Fix)","tags":["vendor-advisory","patch"],"url":"https://xenforo.com/community/threads/xenforo-2-3-9-inc-xfmg-2-2-18-released-security-fix.235659/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:1f9965d7fa6c360caa25494918ce71f78b48d4435145c016f469090c5b68bf82 · sha256:eac37719c0a45fe8… · /containers/cna/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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