Vulnerability in Langchain-Ai Langgraph
CVE-2026-14742
A vulnerability was determined in langchain-ai langgraph up to 1.2.4. The affected element is the function _freeze of the file libs/langgraph/langgraph/_internal/_cache.py of the component Task Result Cache. This manipulation of the argument default_cache_key causes use of weak hash. The attack is possible to be carried out remotely. The complexity of an attack is rather high. The exploitability is described as difficult. The exploit has been publicly disclosed and may be utilized. The pull request to fix this issue awaits acceptance.
Vulnerability class: POODLE (CVE-2014-3566)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.1 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.002 (13.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 13.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Langchain-Ai Langgraph — versions 1.2.0, 1.2.1, 1.2.2
Weakness classification (CWE)
References
- vuldb.com/vuln/376328 (technical-description, vdb-entry)
- vuldb.com/vuln/376328/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-14742 (third-party-advisory)
- vuldb.com/submit/849217 (third-party-advisory)
- github.com/langchain-ai/langgraph/issues/8009 (issue-tracking, exploit)
- github.com/langchain-ai/langgraph/pull/8069 (issue-tracking, patch)
- github.com/langchain-ai/langgraph/ (product)
Frequently asked questions
- What is CVE-2026-14742?
- CVE-2026-14742 is a low-severity vulnerability in Langchain-Ai Langgraph, classified under Use of a Broken or Risky Cryptographic Algorithm. CVSS score: 3.1/10. Published 2026-07-05.
- How severe is CVE-2026-14742?
- Low severity. CVSS v3 base score is 3.1 out of 10.