CVE-2026-54040

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Source
https://cve.org/CVERecord?id=CVE-2026-54040
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54040.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-54040
Aliases
  • GHSA-h59w-x9h4-m6gv
Published
2026-06-25T15:45:23.953Z
Modified
2026-07-15T01:48:54.259509315Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N CVSS Calculator
Summary
LibreChat: 2FA Backup Code Regeneration Without OTP Verification Allows 2FA Bypass
Details

LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.4-rc1, the POST /api/auth/2fa/backup/regenerate endpoint regenerates all 2FA backup codes without requiring any TOTP token or existing backup code verification. An attacker with a stolen session token can silently replace a victim's backup codes and use them to bypass 2FA login or disable 2FA entirely. This vulnerability is fixed in 0.8.4-rc1.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54040.json",
    "cwe_ids": [
        "CWE-306"
    ],
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/danny-avila/librechat

Affected ranges

Type
GIT
Repo
https://github.com/danny-avila/librechat
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
b5a55b23a4b2f5f6428679b1ee358f18b02d51d8
Database specific 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.8.4-rc1"
        },
        {
            "last_affected": "0.8.3"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ],
    "cpe": "cpe:2.3:a:librechat:librechat:*:*:*:*:*:*:*:*"
}

Affected versions

chart-1.*
chart-1.9.0
chart-1.9.1
chart-1.9.2
chart-1.9.3
chart-1.9.4
chart-1.9.5
chart-1.9.6
chart-1.9.7
chart-1.9.8
chart-1.9.9
chart-2.*
chart-2.0.0
chart-2.0.1
librechat-1.*
librechat-1.8.9
v0.*
v0.0.1
v0.0.2
v0.0.3
v0.0.6
v0.1.0
v0.1.1
v0.2.0
v0.3.0
v0.3.3
v0.4.0
v0.4.1
v0.4.2
v0.4.3
v0.4.4
v0.4.5
v0.4.6
v0.4.7
v0.4.8
v0.5.0
v0.5.1
v0.5.2
v0.5.3
v0.5.4
v0.5.5
v0.5.6
v0.5.7
v0.5.8
v0.5.9
v0.6.0
v0.6.1
v0.6.10
v0.6.5
v0.6.6
v0.6.9
v0.7.0
v0.7.1
v0.7.2
v0.7.3
v0.7.3-rc
v0.7.3-rc2
v0.7.4
v0.7.4-rc1
v0.7.5
v0.7.5-rc1
v0.7.5-rc2
v0.7.6
v0.7.6-rc1
v0.7.7
v0.7.7-rc1
v0.7.8
v0.7.8-rc1
v0.7.9
v0.7.9-rc1
v0.8.0
v0.8.0-rc1
v0.8.0-rc2
v0.8.0-rc3
v0.8.0-rc4
v0.8.1
v0.8.1-rc1
v0.8.1-rc2
v0.8.2
v0.8.2-rc1
v0.8.2-rc2
v0.8.2-rc3
v0.8.3
v0.8.3-rc1
v0.8.3-rc2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54040.json"