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CVE-2026-35057

XenForo before 2.3.10 and before 2.2.19 is vulnerable to stored cross-site scripting (XSS) in structured text mentions, primarily affecting legacy profile post content. An attacker can inject malicious scripts through crafted mentions that are stored and executed when other users view the content.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:e5faf99a85867dda75e97117c9f5e29d9867f079132ca664d6d6d9443dd5c568
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":"NONE","baseScore":6.4,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:0fb00e3bd658118f97f4d8ed1944b3330f46b722f96d4e7edbd1e8c7a5e77e7a · sha256:727f1ad133bb843a… · /containers/cna/metrics/1/cvssV3_1

{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.1,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"PASSIVE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact"…

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:0fb00e3bd658118f97f4d8ed1944b3330f46b722f96d4e7edbd1e8c7a5e77e7a · sha256:727f1ad133bb843a… · /containers/cna/metrics/0/cvssV4_0

Affected products and versions

1 source assertion
{"product":"XenForo","vendor":"XenForo","versions":[{"lessThan":"2.3.10","status":"affected","version":"2.3.0","versionType":"semver"},{"lessThan":"2.2.19","status":"affected","version":"0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:0fb00e3bd658118f97f4d8ed1944b3330f46b722f96d4e7edbd1e8c7a5e77e7a · sha256:727f1ad133bb843a… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.4,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:0fb00e3bd658118f97f4d8ed1944b3330f46b722f96d4e7edbd1e8c7a5e77e7a · sha256:727f1ad133bb843a… · /containers/cna/metrics/1/cvssV3_1
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.1,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"PASSIVE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact"…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:0fb00e3bd658118f97f4d8ed1944b3330f46b722f96d4e7edbd1e8c7a5e77e7a · sha256:727f1ad133bb843a… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-79","description":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:0fb00e3bd658118f97f4d8ed1944b3330f46b722f96d4e7edbd1e8c7a5e77e7a · sha256:727f1ad133bb843a… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"XenForo 2.x Stored XSS via Placeholder Collision PoC","tags":["exploit"],"url":"https://github.com/methosiea/xenforo-2-xss"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:0fb00e3bd658118f97f4d8ed1944b3330f46b722f96d4e7edbd1e8c7a5e77e7a · sha256:727f1ad133bb843a… · /containers/cna/references/1
{"name":"XenForo 2.3.10 & Add-ons and 2.2.19 Released (Includes Security Fix)","tags":["vendor-advisory","patch"],"url":"https://xenforo.com/community/threads/xenforo-2-3-10-add-ons-and-2-2-19-released-includes-security-fix.236249/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:0fb00e3bd658118f97f4d8ed1944b3330f46b722f96d4e7edbd1e8c7a5e77e7a · sha256:727f1ad133bb843a… · /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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