Dashboard / CVE-2026-124249

CVE-2026-124249

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 73/100
Published: 2026-11-09 Modified: 2026-11-12 First seen: 2026-11-09 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: X
AT: Present
VC: None
VI: Low
VA: None

Description

http.cookiejar.CookieJar deleted a stored cookie when a response carried an already expired Set-Cookie header for it, using the Domain and Path attributes from the header without consulting the cookie policy. A server could therefore delete cookies belonging to other domains from a shared cookie jar, such as the one used by urllib's HTTPCookieProcessor. The fix consults the cookie policy before an expired cookie may delete an existing one, as required by RFC 6265 section 5.3.

Weakness Classification (1)

Affected Software (5)

VendorProductVersion
Python Software Foundation CPython 0 < 3.16.0
Python Software Foundation CPython 0 < 3.16.0
Python Software Foundation CPython 0 < 3.16.0
Python Software Foundation CPython 0 < 3.16.0a2
Python Software Foundation CPython 0 < 3.16.0a2

References & Advisories (7)

Bug Bounty Relevance

73 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

6.3 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

0.27%
Raw Score 0.002720
Percentile 19.8%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00272
2026-11-12
0.00272
2026-11-10
0.00272

Intelligence Sources

mitre ref →
nvd ref →

External Links