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Description

PolarLearn is a free and open-source learning program. In 0-PRERELEASE-15 and earlier, POST /api/v1/auth/sign-in creates a valid session for banned accounts before verifying the supplied password. That session is then accepted across authenticated /api routes, enabling account data access and authenticated actions as the banned user.

PUBLISHED Reserved 2026-04-06 | Published 2026-04-07 | Updated 2026-04-09 | Assigner GitHub_M




CRITICAL: 9.2CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N

Problem types

CWE-287: Improper Authentication

Product status

<= v0-PRERELEASE-15
affected

References

github.com/...rLearn/security/advisories/GHSA-9vx4-7ww7-4cf5

cve.org (CVE-2026-39322)

nvd.nist.gov (CVE-2026-39322)

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