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Vulnerability record · CVE-2026-85691 · published 4 September 2026

CVE-2026-85691: Server-side request forgery (SSRF) vulnerability

MegaParse 0.0.55 contains an unauthenticated server-side request forgery vulnerability in the POST /v1/url endpoint that fetches caller-supplied URLs server-side. Attackers can supply internal service URLs or metadata endpoints without authentication to read their responses directly from the JSON response.

8.7 CVSS 4.0 High EPSS 0.59% · top 53.8% CWE-918 · Server-side request forgery (SSRF) Deferred
8.7CVSS 4.0 base score
0.59%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
23 Sep 2026Last modified by NVD

Description

MegaParse 0.0.55 contains an unauthenticated server-side request forgery vulnerability in the POST /v1/url endpoint that fetches caller-supplied URLs server-side. Attackers can supply internal service URLs or metadata endpoints without authentication to read their responses directly from the JSON response.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/The-Vibe-Company/megaparse
https://github.com/The-Vibe-Company/megaparse/blob/megaparse-v0.0.55/libs/megaparse/src/megaparse/api/app.py
https://github.com/The-Vibe-Company/megaparse/issues/259
https://www.vulncheck.com/advisories/megaparse-0.0.55-server-side-request-forgery-via-post-v1-url

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-85691), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.