ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2026-39322

PolarLearn is a free and open-source learning program.

Published Apr 7, 2026 · catalog updated Jul 24, 2026 · PolarLearn is a free

Check if you run it

No confirmed exploitation is on record for CVE-2026-39322. EPSS is 0.42%. Act only if a listed version of PolarLearn is a free is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (PolarLearn is a free).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Critical9.2
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.42%
Remediation
Advisory link
Affected products
cpe polarlearn/polarlearn

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe polarlearn/polarlearnversion unspecified

How to fix CVE-2026-39322

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-39322. EPSS is 0.42%. Act only if a listed version of PolarLearn is a free is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-287: Improper Authentication. EPSS 0.42%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 7, 2026 · NIST NVD

    Detected

    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.

  2. Jul 24, 2026 · NIST NVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2026-39322

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-39322

    30-day exploitation probability 0.4%

    first.org
  • NIST NVDVulnerability recordCVE-2026-39322

    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 da

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.