ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2025-8849

LibreChat version 0.7.9 is vulnerable to a Denial of Service (DoS) attack due to unbounded parameter values in the endpoint.

Published Oct 30, 2025 · catalog updated Oct 31, 2025 · LibreChat version 0.7.9 is

Last checked Oct 25, 2026. A connected source was read within the last 7 days.

Check this week

CVE-2025-8849 is not in CISA KEV. FIRST estimates a 35.00% chance of exploitation in the next 30 days. Check whether you run LibreChat version 0.7.9 is.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (LibreChat version 0.7.9 is).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Medium5.4
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
35.00%
Remediation
Version ranges on file
Affected products
vendor danny-avila danny-avila/librechat unspecified <v0.8.0-rc2

LibreChat version 0.7.9 is vulnerable to a Denial of Service (DoS) attack due to unbounded parameter values in the endpoint. The and parameters accept arbitrarily large inputs without proper validation, leading to a null pointer error in the Rust-based backend when excessively large values are submitted. This results in the inability to create new memories, impacting the stability of the service.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor danny-avila danny-avila/librechat unspecified <v0.8.0-rc2unspecified <v0.8.0-rc2

How to fix CVE-2025-8849

  • Upgrade

    CVE-2025-8849 lists a fix boundary at v0.8.0-rc2. Compare the installed build with that boundary before you change production.

  • Version check

    Seen in unspecified <v0.8.0-rc2

  • Advisory

    Open the cve_org record and follow its fix.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-8849 is not in CISA KEV. FIRST estimates a 35.00% chance of exploitation in the next 30 days. Check whether you run LibreChat version 0.7.9 is.

Which versions are affected?

Compare what you have installed with danny-avila danny-avila/librechat unspecified <v0.8.0-rc2 unspecified <v0.8.0-rc2. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 35.00%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 30, 2025 · EUVD

    Detected

    LibreChat version 0.7.9 is vulnerable to a Denial of Service (DoS) attack due to unbounded parameter values in the endpoint. The and parameters accept arbitrarily large inputs without proper validation, leading to a null pointer error in the Rust-based backend when excessively large values are submitted. This results in the inability to create new memories, impacting the stability of the service.

  2. Oct 31, 2025 · EUVD

    Updated

    LibreChat version 0.7.9 is vulnerable to a Denial of Service (DoS) attack due to unbounded parameter values in the endpoint. The and parameters accept arbitrarily large inputs without proper validation, leading to a null pointer error in the Rust-based backend when excessively large values are submitted. This results in the inability to create new memories, impacting the stability of the service.

Sources

  • CVE.orgVulnerability recordCVE-2025-8849

    Official CVE identifier

    cve.org
  • EUVDVulnerability recordEUVD-2025-37228

    LibreChat version 0.7.9 is vulnerable to a Denial of Service (DoS) attack due to unbounded parameter values in the endpoint. The and parameters accept arbitrarily large inputs without proper validation, leading to a null pointer error in the Rust-based backend when excessively la

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 31, 2025. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgOct 25, 2026
  • EUVDOct 25, 2026