CVE catalog

CVE-2026-107928

curl: CVE-2026-107928

Severity: Medium · CVSS 4.8CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
Published: Oct 13, 2026, 10:00:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.24% · Oct 25, 2026

When curl is built with GnuTLS, a malicious WebSocket server can make curl send memory past its send buffer. This is due to an out of bounds read following when `gnutls_record_send()` returns a number of bytes sent **greater than the number of bytes it was given to send**. GnuTLS does that after a blocked send.

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`	vulnerable
Debian	curl	trixie	`8.14.1-2+deb13u5`	vulnerable
Debian	curl	trixie-security	`8.14.1-2+deb13u7`	vulnerable
Debian	curl	bookworm	`7.88.1-10+deb12u15`	vulnerable
Debian	curl	bookworm-security	`7.88.1-10+deb12u5`	vulnerable
Ubuntu	curl	26.10	`8.18.0-1ubuntu2`	vulnerable
Ubuntu	curl	26.10	`8.20.0-2ubuntu1`	vulnerable
Ubuntu	curl	26.10	`8.20.0-2ubuntu3`	vulnerable
Ubuntu	curl	26.10	`8.20.0-2ubuntu10`	vulnerable
Ubuntu	curl	26.10	`8.20.0-2ubuntu11`	vulnerable
Ubuntu	curl	26.10	`8.20.0-2ubuntu11.1`	fixed
Ubuntu	curl	26.10	`8.18.0-1ubuntu2`	vulnerable
Ubuntu	curl	26.10	`8.20.0-2ubuntu1`	vulnerable
Ubuntu	curl	26.10	`8.20.0-2ubuntu3`	vulnerable
Ubuntu	curl	26.10	`8.20.0-2ubuntu10`	vulnerable
Ubuntu	curl	26.10	`8.20.0-2ubuntu11`	vulnerable
Ubuntu	curl	26.10	`8.20.0-2ubuntu11.1`	fixed
Ubuntu	curl	26.04	`8.14.1-2ubuntu1`	vulnerable
Ubuntu	curl	26.04	`8.17.0-1ubuntu1`	vulnerable
Ubuntu	curl	26.04	`8.18.0-1ubuntu1`	vulnerable
Ubuntu	curl	26.04	`8.18.0-1ubuntu2`	vulnerable
Ubuntu	curl	26.04	`8.18.0-1ubuntu2.1`	vulnerable
Ubuntu	curl	26.04	`8.18.0-1ubuntu2.2`	vulnerable
Ubuntu	curl	26.04	`8.18.0-1ubuntu2.3`	vulnerable
Ubuntu	curl	26.04	`8.18.0-1ubuntu2.4`	vulnerable
Ubuntu	curl	26.04	`8.18.0-1ubuntu2.5`	vulnerable
Ubuntu	curl	26.04	`8.18.0-1ubuntu2.7`	vulnerable
Ubuntu	curl	26.04	`8.18.0-1ubuntu2.8`	fixed
Alpine	curl	3.23	`8.23.0-r0`	fixed
Alpine	curl	3.24	`8.23.0-r0`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	curl	source	sid	`8.23.0-1`	not yet assigned	Not reported	Not reported
Debian	curl	source	forky	`(unfixed)`	not yet assigned	Not reported	Not reported
Debian	curl	source	trixie	`(unfixed)`	not yet assigned	Not reported	Not reported
Debian	curl	source	bookworm	`(unfixed)`	not yet assigned	Not reported	Not reported
Ubuntu	curl	deb	26.10	`8.20.0-2ubuntu11.1`	Not reported	USN-8927-2	Not reported
Ubuntu	curl	deb	26.10	`8.20.0-2ubuntu11.1`	Not reported	UBUNTU-CVE-2026-107928	Not reported
Ubuntu	curl	deb	26.04	`8.18.0-1ubuntu2.8`	Not reported	UBUNTU-CVE-2026-107928	Not reported
Alpine	curl	apk	3.23	`8.23.0-r0`	Not reported	ALPINE-CVE-2026-107928	Not reported
Alpine	curl	apk	3.24	`8.23.0-r0`	Not reported	ALPINE-CVE-2026-107928	Not reported

Notes

[trixie] curl: Minor issue

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[curl]Affected
Details (6)
- 7.88.1-10+deb12u15 · amd64 · bookworm
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
- 7.88.1-10+deb12u15 · arm64 · bookworm
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
- 8.14.1-2+deb13u2~bpo13+1 · amd64 · bookworm-backports
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
- 8.14.1-2+deb13u2~bpo13+1 · arm64 · bookworm-backports
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
- 7.88.1-10+deb12u5 · amd64 · bookworm-security
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
- 7.88.1-10+deb12u5 · arm64 · bookworm-security
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
[libcurl3-gnutls]Affected
Source package: [curl]
Details (6)
- 7.88.1-10+deb12u15 · amd64 · bookworm
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
- 7.88.1-10+deb12u15 · arm64 · bookworm
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
- 8.14.1-2+deb13u2~bpo13+1 · amd64 · bookworm-backports
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
- 8.14.1-2+deb13u2~bpo13+1 · arm64 · bookworm-backports
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
- 7.88.1-10+deb12u5 · amd64 · bookworm-security
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
- 7.88.1-10+deb12u5 · arm64 · bookworm-security
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
[libcurl3-nss]Affected
Source package: [curl]
Details (4)
- 7.88.1-10+deb12u15 · amd64 · bookworm
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
- 7.88.1-10+deb12u15 · arm64 · bookworm
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
- 7.88.1-10+deb12u5 · amd64 · bookworm-security
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
- 7.88.1-10+deb12u5 · arm64 · bookworm-security
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
[libcurl4]Affected
Source package: [curl]
Details (6)
- 7.88.1-10+deb12u15 · amd64 · bookworm
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
- 7.88.1-10+deb12u15 · arm64 · bookworm
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
- 8.14.1-2+deb13u2~bpo13+1 · amd64 · bookworm-backports
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
- 8.14.1-2+deb13u2~bpo13+1 · arm64 · bookworm-backports
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
- 7.88.1-10+deb12u5 · amd64 · bookworm-security
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
- 7.88.1-10+deb12u5 · arm64 · bookworm-security
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
[libcurl4-doc]Affected
Source package: [curl]
Details (6)
- 7.88.1-10+deb12u15 · all · bookworm
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
- 7.88.1-10+deb12u15 · all · bookworm
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
- 8.14.1-2+deb13u2~bpo13+1 · all · bookworm-backports
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
- 8.14.1-2+deb13u2~bpo13+1 · all · bookworm-backports
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
- 7.88.1-10+deb12u5 · all · bookworm-security
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
- 7.88.1-10+deb12u5 · all · bookworm-security
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
[libcurl4-gnutls-dev]Affected
Source package: [curl]
Details (6)
- 7.88.1-10+deb12u15 · amd64 · bookworm
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
- 7.88.1-10+deb12u15 · arm64 · bookworm
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
- 8.14.1-2+deb13u2~bpo13+1 · amd64 · bookworm-backports
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
- 8.14.1-2+deb13u2~bpo13+1 · arm64 · bookworm-backports
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
- 7.88.1-10+deb12u5 · amd64 · bookworm-security
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
- 7.88.1-10+deb12u5 · arm64 · bookworm-security
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
[libcurl4-nss-dev]Affected
Source package: [curl]
Details (4)
- 7.88.1-10+deb12u15 · amd64 · bookworm
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
- 7.88.1-10+deb12u15 · arm64 · bookworm
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
- 7.88.1-10+deb12u5 · amd64 · bookworm-security
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
- 7.88.1-10+deb12u5 · arm64 · bookworm-security
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
[libcurl4-openssl-dev]Affected
Source package: [curl]
Details (6)
- 7.88.1-10+deb12u15 · amd64 · bookworm
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
- 7.88.1-10+deb12u15 · arm64 · bookworm
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
- 8.14.1-2+deb13u2~bpo13+1 · amd64 · bookworm-backports
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
- 8.14.1-2+deb13u2~bpo13+1 · arm64 · bookworm-backports
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
- 7.88.1-10+deb12u5 · amd64 · bookworm-security
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12
- 7.88.1-10+deb12u5 · arm64 · bookworm-security
  Affected
  dsa · curl · debian · bookworm; dsa · curl · debian · 12

[Debian 13 (Trixie)]

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

Observed: Oct 27, 2026, 4:43:58 AM UTC

References

[CERT-Bund public 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]