CVE-2021-35472 json
An issue was discovered in LemonLDAP::NG before 2.0.12.
published 2021-07-27 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-22114
- cvss
- 8.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.8%
- EPSS 1.8% chance of exploitation in 30 days, percentile 78%
- public exploits
- 0
- none known
Summary
An issue was discovered in LemonLDAP::NG before 2.0.12. Session cache corruption can lead to authorization bypass or spoofing. By running a loop that makes many authentication attempts, an attacker might alternately be authenticated as one of two different users.
Patch / fix
- lemonldap-ng Debian 14, Debian 13, Debian 12 2.0.11+ds-4
debian advisories DEBIAN-CVE-2021-35472
Exploit prediction
1.80% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- gitlab.ow2.org https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/issues/2539 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.0 | AV:N/AC:M/Au:S/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-307 Improper Restriction of Excessive Authentication Attempts
References
-
gitlab.ow2.org
/lemonldap-ng/lemonldap-ng/-/commit/8d3b763b6af2b8a9c4ad2765fbfabffec8a73af5
patch, third-party-advisory
-
gitlab.ow2.org
/lemonldap-ng/lemonldap-ng/-/issues/2539
exploit, patch, third-party-advisory
-
gitlab.ow2.org
/lemonldap-ng/lemonldap-ng/-/tags
patch, third-party-advisory
-
debian.org
/security/2021/dsa-4943
vendor-advisory, third-party-advisory
Sources
- CVE List CVE-2021-35472
- NVD CVE-2021-35472
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.