01 Record
CVE-2026-27795
LangChain Community: redirect chaining can lead to SSRF bypass via RecursiveUrlLoader
MediumPUBLISHEDCNA: GitHub_M
CNA base score4.1 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N
02 Description
LangChain Community: redirect chaining can lead to SSRF bypass via RecursiveUrlLoader
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 0.24% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 15.8% of scored records. A rank, not a probability.
- NVD base score
- 7.4 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
- NVD analysis status
- Analyzed. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-02-25 17:30Z8 MO AGO
- Last updated
- 2026-02-25 18:42Z8 MO AGO
- Reserved
- 2026-02-24
- Assigning CNA
- GitHub_M
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 4.1)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N
- Weaknesses
- CWE-918Server-Side Request Forgery (SSRF)Base
- Data version
- 5.2
- Document digest
- ae7c727aeec3b891ee10ebc72ee25549635ecbd96fcb3d95fbc47b2819de055b
05 Affected products
VendorProductVersionsPlatforms
06 References
- github.comhttps://github.com/langchain-ai/langchainjs/security/advisories/GHSA-mphv-75cg-56wg
- github.comhttps://github.com/langchain-ai/langchainjs/security/advisories/GHSA-gf3v-fwqg-4vh7
- github.comhttps://github.com/langchain-ai/langchainjs/pull/9990
- github.comhttps://github.com/langchain-ai/langchainjs/commit/2812d2b2b9fd9343c4850e2ab906b8cf440975ee
- github.comhttps://github.com/langchain-ai/langchainjs/commit/d5e3db0d01ab321ec70a875805b2f74aefdadf9d
- github.comhttps://github.com/langchain-ai/langchainjs/releases/tag/%40langchain%2Fcommunity%401.1.14
- github.comhttps://github.com/langchain-ai/langchainjs/releases/tag/%40langchain%2Fcommunity%401.1.18