What is CVE-2022-27305?

CVE-2022-27305 is a high-severity vulnerability in Gibbonedu Gibbon, classified under Session Fixation. CVSS score: 8.8/10. Published 2022-05-25.

How severe is CVE-2022-27305?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Gibbonedu Gibbon

CVE-2022-27305

Gibbon v23 does not generate a new session ID cookie after a user authenticates, making the application vulnerable to session fixation.

Published 2022-05-25 · last modified 2026-07-09.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.009 (58.6th percentile), scored 2026-09-26.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 58.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: +0.000

Affected products

Gibbonedu Gibbon

Weakness classification (CWE)

CWE-384 — Session Fixation

References

af854a3a-2127-422b-91ae-364da2661108 (Product)
af854a3a-2127-422b-91ae-364da2661108 (Product)
github.com/GibbonEdu/core/security/advisories/GHSA-4mq5-8jvh-qq3p (Patch, Third Party Advisory, Mitigation)

Frequently asked questions

What is CVE-2022-27305?: CVE-2022-27305 is a high-severity vulnerability in Gibbonedu Gibbon, classified under Session Fixation. CVSS score: 8.8/10. Published 2022-05-25.
How severe is CVE-2022-27305?: High severity. CVSS v3 base score is 8.8 out of 10.