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VulnerabilityPublished

CVE-2026-86062: HKUDS LightRAG · Cross-site Scripting

Affects HKUDS LightRAGSource CVE Database V5

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Not known to be exploited · CVSS 6.1 Medium : upgrade to 1.5.5 when convenient.

Data as of 5 Nov 2026, 23:24 UTC

CVSS 3.1 base score
6.1Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 27% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.5.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 22 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

What to do

Upgrade LightRAG and hkuds/LightRAG to 1.5.5.

Affected software

ProductAffectedFixed in
HKUDSLightRAGAffected
  • <1.5.5
Fixed in
  • 1.5.5
GitHubhkuds/LightRAGpkg:github/hkuds/LightRAGOther threatsAffected
  • <1.5.5
Fixed in
  • 1.5.5

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade to LightRAG version 1.5.5 or later, where this vulnerability is fixed. No additional mitigation is required once the upgrade is applied.

Description

CVE-2026-86062 is a cross-site scripting (XSS) vulnerability in HKUDS LightRAG versions prior to 1.5.5. The vulnerability arises because the application renders user-supplied content with react-markdown and rehypeRaw without sanitizing HTML, allowing attackers to inject malicious scripts. This can lead to execution of attacker-controlled JavaScript in the context of the LightRAG WebUI, potentially exposing API tokens stored in localStorage and enabling unauthorized API actions. The issue is fixed in version 1.5.5.

References

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