01 Record
CVE-2026-27637
FreeScout's Predictable Authentication Token Enables Account Takeover
CriticalPUBLISHEDCNA: GitHub_M
CNA base score9.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
02 Description
FreeScout's Predictable Authentication Token Enables Account Takeover
03 Exploitation and scoring
- Exploitation
- Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
- SSVC decision
- ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
- AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
- Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
- EPSS probability
- 0.76% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 55.0% of scored records. A rank, not a probability.
- NVD base score
- 9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Analyzed. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-02-25 03:41Z8 MO AGO
- Last updated
- 2026-02-25 15:21Z8 MO AGO
- Reserved
- 2026-02-20
- Assigning CNA
- GitHub_M
- Record state
- PUBLISHED
- Severity
- Critical (CVSS 9.8)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-330Use of Insufficiently Random ValuesClass
- Data version
- 5.2
- Document digest
- 3c0f6c264a1432b466f5cb29e3cb05b70ee65ea7cc44dff97a8c4bbfc827fab3
05 Affected products
VendorProductVersionsPlatforms
06 References
- github.comhttps://github.com/freescout-help-desk/freescout/security/advisories/GHSA-6gcm-v8xf-j9v9
- github.comhttps://github.com/freescout-help-desk/freescout/security/advisories/GHSA-mw88-x7j3-74vc
- github.comhttps://github.com/freescout-help-desk/freescout/commit/004a8231f6e413af1d4680930b0e2342fd4283f9