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PatchSiren cyber security CVE debrief

CVE-2026-12813 activepieces CVE debrief

CVE-2026-12813 is a server-side request forgery (SSRF) vulnerability detected in activepieces up to version 0.83.0. The vulnerability affects the handleUrlFile function in the /packages/server/engine/src/lib/variables/processors/file.ts file. This issue allows for remote exploitation and has a publicly available exploit. The CVSS score is 2.1, indicating a low severity. The vendor, Unknown Vendor, was contacted but did not respond. Defenders should prioritize patching due to the public exploit availability.

Vendor
activepieces
Product
activepieces
CVSS
LOW 2.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-21
Original CVE updated
2026-06-22
Advisory published
2026-06-21
Advisory updated
2026-06-22

Who should care

Defenders of activepieces installations, especially those using versions up to 0.83.0, should prioritize patching this vulnerability. The public availability of an exploit increases the urgency for remediation. Security teams responsible for web applications and server-side software should review and update their systems accordingly.

Technical summary

The CVE-2026-12813 vulnerability is caused by a weakness in the handleUrlFile function within the activepieces package, specifically in the file /packages/server/engine/src/lib/variables/processors/file.ts. This function is susceptible to server-side request forgery (SSRF) attacks, allowing an attacker to manipulate the server into making unintended requests. The vulnerability has been publicly disclosed and an exploit is available, making it a priority for defenders to update to a patched version.

Defensive priority

Patching is recommended due to public exploit availability and potential for SSRF attacks.

Recommended defensive actions

  • Apply the official patch or upgrade to a version beyond 0.83.0.
  • Review and restrict access to the handleUrlFile function if possible.
  • Implement additional monitoring for suspicious server requests.
  • Verify the integrity of server-side requests to prevent SSRF.
  • Consider compensating controls such as web application firewalls (WAFs) to detect and prevent SSRF attacks.

Evidence notes

The primary evidence for this vulnerability comes from the NVD and Vuldb sources. The vulnerability affects activepieces up to version 0.83.0. The handleUrlFile function in /packages/server/engine/src/lib/variables/processors/file.ts is the specific component impacted. Defenders should verify the version of activepieces in use and confirm if it is within the affected range.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-12813 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-12813

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-12813 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-12813

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental 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.