Vulnerability record · CVE-2026-61640 · published 31 August 2026

CVE-2026-61640: Server-side request forgery (SSRF) vulnerability

Wallos is an open-source, self-hostable personal subscription tracker. Prior to version 4.9.6, Admin-configured OIDC token_url and user_info_url in includes/oidc/handle_oidc_callback.php:18-49 are used directly in curl_init() with zero SSRF filtering. Unlike logo/webhook URLs which have validate_webhook_url_for_ssrf(), OIDC URLs bypass all protections. Admin sets URL to http://169.254.169.254/latest/meta-data/ for cloud metadata access or internal network pivoting. This issue has been patched in version 4.9.6.

8.5 CVSS 4.0 High EPSS 0.54% · top 56.8% CWE-918 · Server-side request forgery (SSRF) Deferred

8.5CVSS 4.0 base score

0.54%EPSS exploitation probability, 30 days

NoNot in CISA KEV

0Affected product versions listed by NVD

4References

8 Sep 2026Last modified by NVD

Description

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/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

Link	Tags
https://github.com/ellite/Wallos/commit/b75f13d0ffa3ed7e77e8e79e4b9fd3fc528c98d3
https://github.com/ellite/Wallos/pull/1092
https://github.com/ellite/Wallos/releases/tag/v4.9.6
https://github.com/ellite/Wallos/security/advisories/GHSA-x9x5-gh69-q7cm

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Source: NIST National Vulnerability Database (record CVE-2026-61640), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.