What’s Vulnerable › Vulnerabilities

CVE-2026-14742: langchain-ai langgraph Task Result Cache _cache.py _freeze weak hash

• Severity: low (CVSS 3.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-05 · updated 2026-10-25
• Weakness: CWE-327

Description

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.

Affected products

• langchain-ai langgraph: 1.2.0, 1.2.1, 1.2.2, 1.2.3, 1.2.4

References

• https://github.com/langchain-ai/langgraph/
• https://github.com/langchain-ai/langgraph/issues/8009
• https://github.com/langchain-ai/langgraph/pull/8069
• https://vuldb.com/cve/CVE-2026-14742
• https://vuldb.com/submit/849217
• https://vuldb.com/vuln/376328
• https://vuldb.com/vuln/376328/cti

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