CVE catalog

CVE-2025-9086

curl vulnerabilities

Severity: High · CVSS 7.5CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Published: Sep 9, 2025, 10:00:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 1.46% · Oct 27, 2026

1. A cookie is set using the `secure` keyword for `https://target` 2. curl is redirected to or otherwise made to speak with `http://target` (same hostname, but using clear text HTTP) using the same cookie set 3. The same cookie name is set - but with only a slash as path (`path="/"`). Since this site is not secure, the cookie *should* be ignored. 4. A bug in the path comparison logic makes curl read outside a heap buffer boundary The bug either causes a crash or it potentially makes the comparison come to the wrong conclusion and lets the clear-text site override the contents of the secure cookie, contrary to expectations and depending on the memory contents immediately following the single-byte allocation that holds the path. The presumed and correct behavior would be to plainly ignore the second set of the cookie since it was already set as secure on a secure host so overriding it on an insecure host should not be okay.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	curl	sid	`8.23.0-1`	fixed
Debian	curl	forky	`8.22.0-1`	fixed
Debian	curl	trixie	`8.14.1-2+deb13u5`	fixed
Debian	curl	trixie-security	`8.14.1-2+deb13u7`	fixed
Debian	curl	bookworm	`7.88.1-10+deb12u15`	not affected
Debian	curl	bookworm-security	`7.88.1-10+deb12u5`	not affected
Ubuntu	curl	noble	`8.5.0-2ubuntu10.7`	fixed
Ubuntu	libcurl3t64-gnutls	noble	`8.5.0-2ubuntu10.7`	fixed
Ubuntu	libcurl4-doc	noble	`8.5.0-2ubuntu10.7`	fixed
Ubuntu	libcurl4-gnutls-dev	noble	`8.5.0-2ubuntu10.7`	fixed
Ubuntu	libcurl4-openssl-dev	noble	`8.5.0-2ubuntu10.7`	fixed
Ubuntu	libcurl4t64	noble	`8.5.0-2ubuntu10.7`	fixed
Ubuntu	curl	noble	Not reported	not affected
Cpe	curl	Not reported	`8.16.0`	fixed
Cpe	debian_linux	Not reported	Not reported	unknown
Ubuntu	curl	25.10	`8.12.1-3ubuntu1`	vulnerable
Ubuntu	curl	25.10	`8.13.0-5ubuntu1`	vulnerable
Ubuntu	curl	25.10	`8.14.1-1ubuntu2`	vulnerable
Ubuntu	curl	25.10	`8.14.1-1ubuntu3`	vulnerable
Ubuntu	curl	25.10	`8.14.1-2ubuntu1`	vulnerable
Ubuntu	curl	25.10	`8.14.1-2ubuntu1.1`	fixed
Alpine	curl	3.19	`8.14.1-r2`	fixed
Alpine	curl	3.20	`8.14.1-r2`	fixed
Alpine	curl	3.21	`8.14.1-r2`	fixed
Alpine	curl	3.22	`8.14.1-r2`	fixed
Alpine	curl	3.23	`8.16.0-r0`	fixed
Alpine	curl	3.24	`8.16.0-r0`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	curl	source	sid	`8.16.0~rc2-1`	not yet assigned	Not reported	Not reported
Debian	curl	source	forky	`8.16.0~rc2-1`	not yet assigned	Not reported	Not reported
Debian	curl	source	trixie	`8.14.1-2+deb13u1`	not yet assigned	Not reported	Not reported
Debian	curl	source	bookworm	`Not affected`	unimportant	Not reported	Not reported
Ubuntu	curl	deb	noble	`8.5.0-2ubuntu10.7`	Not reported	Not reported	Not reported
Ubuntu	libcurl3t64-gnutls	deb	noble	`8.5.0-2ubuntu10.7`	Not reported	Not reported	Not reported
Ubuntu	libcurl4-doc	deb	noble	`8.5.0-2ubuntu10.7`	Not reported	Not reported	Not reported
Ubuntu	libcurl4-gnutls-dev	deb	noble	`8.5.0-2ubuntu10.7`	Not reported	Not reported	Not reported
Ubuntu	libcurl4-openssl-dev	deb	noble	`8.5.0-2ubuntu10.7`	Not reported	Not reported	Not reported
Ubuntu	libcurl4t64	deb	noble	`8.5.0-2ubuntu10.7`	Not reported	Not reported	Not reported
Cpe	curl	cpe	Not reported	`8.16.0`	Not reported	NVD-CVE-2025-9086	Not reported
Ubuntu	curl	deb	25.10	`8.14.1-2ubuntu1.1`	Not reported	UBUNTU-CVE-2025-9086	Not reported
Alpine	curl	apk	3.19	`8.14.1-r2`	Not reported	ALPINE-CVE-2025-9086	Not reported
Alpine	curl	apk	3.20	`8.14.1-r2`	Not reported	ALPINE-CVE-2025-9086	Not reported
Alpine	curl	apk	3.21	`8.14.1-r2`	Not reported	ALPINE-CVE-2025-9086	Not reported
Alpine	curl	apk	3.22	`8.14.1-r2`	Not reported	ALPINE-CVE-2025-9086	Not reported
Alpine	curl	apk	3.23	`8.16.0-r0`	Not reported	ALPINE-CVE-2025-9086	Not reported
Alpine	curl	apk	3.24	`8.16.0-r0`	Not reported	ALPINE-CVE-2025-9086	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[curl]Not affected
Details (6)
- 7.88.1-10+deb12u15 · amd64 · bookworm
  Not affected
  usn · curl · debian · bookworm
- 7.88.1-10+deb12u15 · arm64 · bookworm
  Not affected
  usn · curl · debian · bookworm
- 8.14.1-2+deb13u2~bpo13+1 · amd64 · bookworm-backports
  Not affected
  usn · curl · debian · bookworm
- 8.14.1-2+deb13u2~bpo13+1 · arm64 · bookworm-backports
  Not affected
  usn · curl · debian · bookworm
- 7.88.1-10+deb12u5 · amd64 · bookworm-security
  Not affected
  usn · curl · debian · bookworm
- 7.88.1-10+deb12u5 · arm64 · bookworm-security
  Not affected
  usn · curl · debian · bookworm
[libcurl3-gnutls]Not affected
Source package: [curl]
Details (6)
- 7.88.1-10+deb12u15 · amd64 · bookworm
  Not affected
  usn · curl · debian · bookworm
- 7.88.1-10+deb12u15 · arm64 · bookworm
  Not affected
  usn · curl · debian · bookworm
- 8.14.1-2+deb13u2~bpo13+1 · amd64 · bookworm-backports
  Not affected
  usn · curl · debian · bookworm
- 8.14.1-2+deb13u2~bpo13+1 · arm64 · bookworm-backports
  Not affected
  usn · curl · debian · bookworm
- 7.88.1-10+deb12u5 · amd64 · bookworm-security
  Not affected
  usn · curl · debian · bookworm
- 7.88.1-10+deb12u5 · arm64 · bookworm-security
  Not affected
  usn · curl · debian · bookworm
[libcurl3-nss]Not affected
Source package: [curl]
Details (4)
- 7.88.1-10+deb12u15 · amd64 · bookworm
  Not affected
  usn · curl · debian · bookworm
- 7.88.1-10+deb12u15 · arm64 · bookworm
  Not affected
  usn · curl · debian · bookworm
- 7.88.1-10+deb12u5 · amd64 · bookworm-security
  Not affected
  usn · curl · debian · bookworm
- 7.88.1-10+deb12u5 · arm64 · bookworm-security
  Not affected
  usn · curl · debian · bookworm
[libcurl4]Not affected
Source package: [curl]
Details (6)
- 7.88.1-10+deb12u15 · amd64 · bookworm
  Not affected
  usn · curl · debian · bookworm
- 7.88.1-10+deb12u15 · arm64 · bookworm
  Not affected
  usn · curl · debian · bookworm
- 8.14.1-2+deb13u2~bpo13+1 · amd64 · bookworm-backports
  Not affected
  usn · curl · debian · bookworm
- 8.14.1-2+deb13u2~bpo13+1 · arm64 · bookworm-backports
  Not affected
  usn · curl · debian · bookworm
- 7.88.1-10+deb12u5 · amd64 · bookworm-security
  Not affected
  usn · curl · debian · bookworm
- 7.88.1-10+deb12u5 · arm64 · bookworm-security
  Not affected
  usn · curl · debian · bookworm
[libcurl4-doc]Not affected
Source package: [curl]
Details (6)
- 7.88.1-10+deb12u15 · all · bookworm
  Not affected
  usn · curl · debian · bookworm
- 7.88.1-10+deb12u15 · all · bookworm
  Not affected
  usn · curl · debian · bookworm
- 8.14.1-2+deb13u2~bpo13+1 · all · bookworm-backports
  Not affected
  usn · curl · debian · bookworm
- 8.14.1-2+deb13u2~bpo13+1 · all · bookworm-backports
  Not affected
  usn · curl · debian · bookworm
- 7.88.1-10+deb12u5 · all · bookworm-security
  Not affected
  usn · curl · debian · bookworm
- 7.88.1-10+deb12u5 · all · bookworm-security
  Not affected
  usn · curl · debian · bookworm
[libcurl4-gnutls-dev]Not affected
Source package: [curl]
Details (6)
- 7.88.1-10+deb12u15 · amd64 · bookworm
  Not affected
  usn · curl · debian · bookworm
- 7.88.1-10+deb12u15 · arm64 · bookworm
  Not affected
  usn · curl · debian · bookworm
- 8.14.1-2+deb13u2~bpo13+1 · amd64 · bookworm-backports
  Not affected
  usn · curl · debian · bookworm
- 8.14.1-2+deb13u2~bpo13+1 · arm64 · bookworm-backports
  Not affected
  usn · curl · debian · bookworm
- 7.88.1-10+deb12u5 · amd64 · bookworm-security
  Not affected
  usn · curl · debian · bookworm
- 7.88.1-10+deb12u5 · arm64 · bookworm-security
  Not affected
  usn · curl · debian · bookworm
[libcurl4-nss-dev]Not affected
Source package: [curl]
Details (4)
- 7.88.1-10+deb12u15 · amd64 · bookworm
  Not affected
  usn · curl · debian · bookworm
- 7.88.1-10+deb12u15 · arm64 · bookworm
  Not affected
  usn · curl · debian · bookworm
- 7.88.1-10+deb12u5 · amd64 · bookworm-security
  Not affected
  usn · curl · debian · bookworm
- 7.88.1-10+deb12u5 · arm64 · bookworm-security
  Not affected
  usn · curl · debian · bookworm
[libcurl4-openssl-dev]Not affected
Source package: [curl]
Details (6)
- 7.88.1-10+deb12u15 · amd64 · bookworm
  Not affected
  usn · curl · debian · bookworm
- 7.88.1-10+deb12u15 · arm64 · bookworm
  Not affected
  usn · curl · debian · bookworm
- 8.14.1-2+deb13u2~bpo13+1 · amd64 · bookworm-backports
  Not affected
  usn · curl · debian · bookworm
- 8.14.1-2+deb13u2~bpo13+1 · arm64 · bookworm-backports
  Not affected
  usn · curl · debian · bookworm
- 7.88.1-10+deb12u5 · amd64 · bookworm-security
  Not affected
  usn · curl · debian · bookworm
- 7.88.1-10+deb12u5 · arm64 · bookworm-security
  Not affected
  usn · curl · debian · bookworm

[Debian 13 (Trixie)]

[curl]Fixed
Details (5)
- 8.14.1-2+deb13u4 · amd64 · trixie
  Fixed · Fixed: 8.14.1-2+deb13u1
  usn · curl · debian · 13
- 8.14.1-2+deb13u4 · arm64 · trixie
  Fixed · Fixed: 8.14.1-2+deb13u1
  usn · curl · debian · 13
- 8.21.0-2~bpo13+1 · amd64 · trixie-backports
  Fixed · Fixed: 8.14.1-2+deb13u1
  usn · curl · debian · 13
- 8.21.0-2~bpo13+1 · arm64 · trixie-backports
  Fixed · Fixed: 8.14.1-2+deb13u1
  usn · curl · debian · 13
- 8.14.1-2+deb13u7 · amd64 · trixie-security
  Fixed · Fixed: 8.14.1-2+deb13u1
  usn · curl · debian · 13
[libcurl3t64-gnutls]Fixed
Source package: [curl]
Details (5)
- 8.14.1-2+deb13u4 · amd64 · trixie
  Fixed · Fixed: 8.14.1-2+deb13u1
  usn · curl · debian · 13
- 8.14.1-2+deb13u4 · arm64 · trixie
  Fixed · Fixed: 8.14.1-2+deb13u1
  usn · curl · debian · 13
- 8.21.0-2~bpo13+1 · amd64 · trixie-backports
  Fixed · Fixed: 8.14.1-2+deb13u1
  usn · curl · debian · 13
- 8.21.0-2~bpo13+1 · arm64 · trixie-backports
  Fixed · Fixed: 8.14.1-2+deb13u1
  usn · curl · debian · 13
- 8.14.1-2+deb13u7 · amd64 · trixie-security
  Fixed · Fixed: 8.14.1-2+deb13u1
  usn · curl · debian · 13
[libcurl4-doc]Fixed
Source package: [curl]
Details (5)
- 8.14.1-2+deb13u4 · all · trixie
  Fixed · Fixed: 8.14.1-2+deb13u1
  usn · curl · debian · 13
- 8.14.1-2+deb13u4 · all · trixie
  Fixed · Fixed: 8.14.1-2+deb13u1
  usn · curl · debian · 13
- 8.21.0-2~bpo13+1 · all · trixie-backports
  Fixed · Fixed: 8.14.1-2+deb13u1
  usn · curl · debian · 13
- 8.21.0-2~bpo13+1 · all · trixie-backports
  Fixed · Fixed: 8.14.1-2+deb13u1
  usn · curl · debian · 13
- 8.14.1-2+deb13u7 · all · trixie-security
  Fixed · Fixed: 8.14.1-2+deb13u1
  usn · curl · debian · 13
[libcurl4-gnutls]Fixed
Source package: [curl]
Details (2)
- 8.21.0-2~bpo13+1 · amd64 · trixie-backports
  Fixed · Fixed: 8.14.1-2+deb13u1
  usn · curl · debian · 13
- 8.21.0-2~bpo13+1 · arm64 · trixie-backports
  Fixed · Fixed: 8.14.1-2+deb13u1
  usn · curl · debian · 13
[libcurl4-gnutls-dev]Fixed
Source package: [curl]
Details (5)
- 8.14.1-2+deb13u4 · amd64 · trixie
  Fixed · Fixed: 8.14.1-2+deb13u1
  usn · curl · debian · 13
- 8.14.1-2+deb13u4 · arm64 · trixie
  Fixed · Fixed: 8.14.1-2+deb13u1
  usn · curl · debian · 13
- 8.21.0-2~bpo13+1 · amd64 · trixie-backports
  Fixed · Fixed: 8.14.1-2+deb13u1
  usn · curl · debian · 13
- 8.21.0-2~bpo13+1 · arm64 · trixie-backports
  Fixed · Fixed: 8.14.1-2+deb13u1
  usn · curl · debian · 13
- 8.14.1-2+deb13u7 · amd64 · trixie-security
  Fixed · Fixed: 8.14.1-2+deb13u1
  usn · curl · debian · 13
[libcurl4-openssl-dev]Fixed
Source package: [curl]
Details (5)
- 8.14.1-2+deb13u4 · amd64 · trixie
  Fixed · Fixed: 8.14.1-2+deb13u1
  usn · curl · debian · 13
- 8.14.1-2+deb13u4 · arm64 · trixie
  Fixed · Fixed: 8.14.1-2+deb13u1
  usn · curl · debian · 13
- 8.21.0-2~bpo13+1 · amd64 · trixie-backports
  Fixed · Fixed: 8.14.1-2+deb13u1
  usn · curl · debian · 13
- 8.21.0-2~bpo13+1 · arm64 · trixie-backports
  Fixed · Fixed: 8.14.1-2+deb13u1
  usn · curl · debian · 13
- 8.14.1-2+deb13u7 · amd64 · trixie-security
  Fixed · Fixed: 8.14.1-2+deb13u1
  usn · curl · debian · 13
[libcurl4t64]Fixed
Source package: [curl]
Details (5)
- 8.14.1-2+deb13u4 · amd64 · trixie
  Fixed · Fixed: 8.14.1-2+deb13u1
  usn · curl · debian · 13
- 8.14.1-2+deb13u4 · arm64 · trixie
  Fixed · Fixed: 8.14.1-2+deb13u1
  usn · curl · debian · 13
- 8.21.0-2~bpo13+1 · amd64 · trixie-backports
  Fixed · Fixed: 8.14.1-2+deb13u1
  usn · curl · debian · 13
- 8.21.0-2~bpo13+1 · arm64 · trixie-backports
  Fixed · Fixed: 8.14.1-2+deb13u1
  usn · curl · debian · 13
- 8.14.1-2+deb13u7 · amd64 · trixie-security
  Fixed · Fixed: 8.14.1-2+deb13u1
  usn · curl · debian · 13

Observed: Oct 27, 2026, 11:51:39 AM UTC

References

[CERT-Bund public advisories] · [CISA cybersecurity advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]