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CVE-2026-54025

LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.4-rc1, there is a vulnerability in LibreChat's markdown artifact preview pipeline. The marked library v15.0.12 does not HTML-escape double-quote characters in image alt text when a custom renderer falls through to the default renderer. LibreChat's generateMarkdownHtml function (in client/src/utils/markdown.ts) installs a custom image renderer that returns false for URLs passing the isSafeUrl allowlist check,
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:52eeb93af59215e7247dbfb930743f0154cc0462772a7e69429d4abcb587a6a9
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"LibreChat","vendor":"danny-avila","versions":[{"status":"affected","version":"< 0.8.4-rc1"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b29d3effa51f5234074ad89bbc850c145d9b8c62265870f86fa80a92e682bc78 · sha256:ab05b4404b8ecfba… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.4,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/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:b29d3effa51f5234074ad89bbc850c145d9b8c62265870f86fa80a92e682bc78 · sha256:ab05b4404b8ecfba… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"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:b29d3effa51f5234074ad89bbc850c145d9b8c62265870f86fa80a92e682bc78 · sha256:ab05b4404b8ecfba… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"tags":["exploit"],"url":"https://github.com/danny-avila/LibreChat/security/advisories/GHSA-3phr-62qf-cxf3"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b29d3effa51f5234074ad89bbc850c145d9b8c62265870f86fa80a92e682bc78 · sha256:ab05b4404b8ecfba… · /containers/adp/0/references/0
{"name":"https://github.com/danny-avila/LibreChat/security/advisories/GHSA-3phr-62qf-cxf3","tags":["x_refsource_CONFIRM"],"url":"https://github.com/danny-avila/LibreChat/security/advisories/GHSA-3phr-62qf-cxf3"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b29d3effa51f5234074ad89bbc850c145d9b8c62265870f86fa80a92e682bc78 · sha256:ab05b4404b8ecfba… · /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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