SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityDeferred

CVE-2026-36727

An insecure authentication vulnerability in the /api/social-sign-in endpoint of bookcars v8.3 allows attackers to bypass authentication via a forged JWT token.

CRITICAL 9.1EPSS 0.36%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.36%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

An insecure authentication vulnerability in the /api/social-sign-in endpoint of bookcars v8.3 allows attackers to bypass authentication via a forged JWT token.

CVSS 3.1
9.1 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS
0.36% probability · 30th percentile
CISA KEV
Not listed
Weakness
CWE-287
Source
cve@mitre.org

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.