CVE-2026-12767 IBM CVE debrief

Who should care

Defenders responsible for systems using IBM Langflow OSS versions 1.0.0 through 1.11.5 should assess exposure and potential impact. This includes operators, platform administrators, vulnerability management teams, and security teams who need to verify exposure, apply patches or mitigations, and monitor for potential attacks. The vulnerability's medium severity and potential for unauthorized requests highlight the importance of prompt verification and mitig

Why it matters

Defenders should care about CVE-2026-12767 because it involves a server-side request forgery (SSRF) vulnerability in IBM Langflow OSS, potentially allowing unauthorized requests and network enumeration.

• Potential network enumeration by attackers
• Possible facilitation of other attacks through unauthorized requests
• Need for verification of exposure and potential impact
• Priority for applying patches or mitigations

Technical summary

IBM Langflow OSS versions 1.0.0 through 1.11.5 are vulnerable to server-side request forgery (SSRF), potentially allowing an unauthenticated attacker to send unauthorized requests from the system. This vulnerability has a CVSS score of 6.5, indicating medium severity. The vulnerability could facilitate network enumeration or other attacks, emphasizing the need for defenders to assess exposure and prioritize mitigation. Official CVE and NVD records provide details on the vulnerability and its impact, supporting the need for prompt action.

Defensive priority

Defenders should prioritize verifying exposure and assessing potential impact, focusing on systems using IBM Langflow OSS versions 1.0.0 through 1.11.5.

Recommended defensive actions

• Verify if systems using IBM Langflow OSS are exposed to the vulnerability
• Assess potential impact of SSRF attacks on network enumeration and other potential targets
• Apply patches or mitigations as recommended by the vendor
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including its description, CVSS score of 6.5, and affected versions (1.0.0 through 1.11.5). The vulnerability involves server-side request forgery (SSRF), which could lead to network enumeration or other attacks. Defenders should verify exposure and assess potential impact, focusing on systems using IBM Langflow OSS versions 1.0.0 through 1.11.5. Evidence from the CVE Program and NVD supports this assessment, with official records providing source-provided CVE metadata

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.