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GHSA-qcxq-75wr-5cm8

ldap3_proto has LDAP Filter stack exhaustion

Published
May 6, 2026
Updated
May 6, 2026
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed

Blast Radius

1 pkg affected
🦀ldap3_proto

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects crates.io packages — download data is not available via public APIs for these ecosystems.

Description

Impact

LDAP queries are not validated for depth, which can cause the parser (both PEG and ASN) to exhaust the stack. This may cause a denial of service in applications that process queries.

Workarounds

N/A

Resources

Related to GHSA-r5fr-9gmv-jggh

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🦀crates.ioldap3_protoall versions0.7.1

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for ldap3_proto. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

  2. Fix

    Update ldap3_proto to 0.7.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-qcxq-75wr-5cm8 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 pinpoints whether GHSA-qcxq-75wr-5cm8 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-qcxq-75wr-5cm8. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

### Impact LDAP queries are not validated for depth, which can cause the parser (both PEG and ASN) to exhaust the stack. This *may* cause a denial of service in applications that process queries. ### Workarounds N/A ### Resources Related to GHSA-r5fr-9gmv-jggh
O3 Security · Impact-Aware SCA

Is GHSA-qcxq-75wr-5cm8 in your dependencies?

O3 detects GHSA-qcxq-75wr-5cm8 across crates.io dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.