CVE-2026-31942: LibreChat is an enhanced ChatGPT clone that supports multiple AI providers

Q: How do I fix CVE-2026-31942?

librechat: upgrade to 0.8.3. Exact commands for each OS are on this page.

Q: Is CVE-2026-31942 being exploited?

CVE-2026-31942 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-31942 affect?

CVE-2026-31942 affects librechat. Severity is high (CVSS 7.1). LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. In versions up to and including 0.7.6, an Insecure Direct Object Reference (IDOR) vulnerability exists in the API keys management endpoint (PUT /api/keys). Due to t

Routine

HIGH 7.1UPGRADE

CVE-2026-31942 is a high-severity flaw (CVSS 7.1) affecting librechat. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. In versions up to and including 0.7.6, an Insecure Direct Object Reference (IDOR) vulnerability exists in the API keys management endpoint (PUT /api/keys). Due to the use of the JavaScript object spread operator after setting the authenticated user's ID, any authenticated user can inject a userId parameter in the request body to overwrite any other user's API keys (e.g.,

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 89%)
CISA exploited list	No
Weakness	CWE-862
Published	2026-06-02
Last modified	2026-07-22

Publisher (CNA): GitHub, Inc. · Vendor: librechat

Last updated 2026-07-22 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-02 23:16 UTCPublished CVE record published
2026-07-22 19:10 UTCUpdated Record last modified

librechat librechat UPGRADE

Affected: < 0.8.3

Fixed in: 0.8.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy librechat || rpm -q librechat || librechat --version

2. UPGRADE to 0.8.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade librechat

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade librechat

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-31942?

librechat: upgrade to 0.8.3. Exact commands for each OS are on this page.

Is CVE-2026-31942 being exploited?

CVE-2026-31942 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-31942 affect?

CVE-2026-31942 affects librechat. Severity is high (CVSS 7.1). LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. In versions up to and including 0.7.6, an Insecure Direct Object Reference (IDOR) vulnerability exists in the API keys management endpoint (PUT /api/keys). Due to t

How urgent is CVE-2026-31942?

Priority 27/100. High severity

Software pages

OpenAI ChatGPT vulnerabilities

Related CVEs

CVE-2026-31943 HIGH 8.5 UPGRADE LibreChat is a ChatGPT clone with additional features
CVE-2026-31945 HIGH 7.7 DOWNGRADE LibreChat is a ChatGPT clone with additional features
CVE-2026-31951 MEDIUM 6.8 UPGRADE LibreChat is a ChatGPT clone with additional features
CVE-2026-31950 MEDIUM 5.3 DOWNGRADE LibreChat is a ChatGPT clone with additional features
CVE-2026-54033 HIGH 7.7 UPGRADE LibreChat is an enhanced ChatGPT clone that supports multiple AI providers

References

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