CVE catalog

CVE-2026-12318

Incorrect boundary conditions in the Libraries component in NSS. This vulnerability was fixed in Firefox 152 and Thunderbird 152.

[CVE catalog]

Severity: High · CVSS 7.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Published: Jun 16, 2026, 11:52:51 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.26% · Oct 25, 2026

Incorrect boundary conditions in the Libraries component in NSS. This vulnerability was fixed in Firefox 152 and Thunderbird 152.

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	nss	sid	`2:3.131.1-1`	fixed
Debian	nss	forky	`2:3.131.1-1`	fixed
Debian	nss	trixie	`2:3.110-1+deb13u4`	fixed
Debian	nss	trixie-security	`2:3.110-1+deb13u4`	fixed
Debian	nss	bookworm	`2:3.87.1-1+deb12u2`	vulnerable
Debian	nss	bookworm-security	`2:3.87.1-1+deb12u4`	fixed
Cpe	nss	Not reported	`2:3.98-1ubuntu0.2`	fixed
Cpe	libnss3	Not reported	`2:3.98-1ubuntu0.2`	fixed
Cpe	libnss3-dev	Not reported	`2:3.98-1ubuntu0.2`	fixed
Cpe	libnss3-tools	Not reported	`2:3.98-1ubuntu0.2`	fixed
Cpe	firefox	Not reported	`152.0.0`	fixed
Cpe	thunderbird	Not reported	`152.0.0`	fixed
Ubuntu	nss	22.04	`2:3.68-1ubuntu1`	vulnerable
Ubuntu	nss	22.04	`2:3.68-1ubuntu2`	vulnerable
Ubuntu	nss	22.04	`2:3.68.2-0ubuntu1`	vulnerable
Ubuntu	nss	22.04	`2:3.68.2-0ubuntu1.1`	vulnerable
Ubuntu	nss	22.04	`2:3.68.2-0ubuntu1.2`	vulnerable
Ubuntu	nss	22.04	`2:3.98-0ubuntu0.22.04.1`	vulnerable
Ubuntu	nss	22.04	`2:3.98-0ubuntu0.22.04.2`	vulnerable
Ubuntu	nss	22.04	`2:3.98-0ubuntu0.22.04.3`	vulnerable
Ubuntu	nss	22.04	`2:3.98-0ubuntu0.22.04.4`	fixed
Ubuntu	nss	24.04	`2:3.92-1`	vulnerable
Ubuntu	nss	24.04	`2:3.94-1`	vulnerable
Ubuntu	nss	24.04	`2:3.95-1`	vulnerable
Ubuntu	nss	24.04	`2:3.96.1-1`	vulnerable
Ubuntu	nss	24.04	`2:3.98-1`	vulnerable
Ubuntu	nss	24.04	`2:3.98-1build1`	vulnerable
Ubuntu	nss	24.04	`2:3.98-1ubuntu0.1`	vulnerable
Ubuntu	nss	24.04	`2:3.98-1ubuntu0.2`	fixed
Ubuntu	nss	25.10	`2:3.108-1ubuntu1`	vulnerable
Ubuntu	nss	25.10	`2:3.110-1`	vulnerable
Ubuntu	nss	25.10	`2:3.111-1`	vulnerable
Ubuntu	nss	25.10	`2:3.112-1`	vulnerable
Ubuntu	nss	25.10	`2:3.114-1`	vulnerable
Ubuntu	nss	25.10	`2:3.114-1ubuntu0.1`	vulnerable
Ubuntu	nss	25.10	`2:3.114-1ubuntu0.2`	fixed
Ubuntu	nss	26.04	`2:3.114-1`	vulnerable
Ubuntu	nss	26.04	`2:3.117-1`	vulnerable
Ubuntu	nss	26.04	`2:3.119-1`	vulnerable
Ubuntu	nss	26.04	`2:3.120-1`	vulnerable
Ubuntu	nss	26.04	`2:3.120-1ubuntu1`	vulnerable
Ubuntu	nss	26.04	`2:3.120-1ubuntu2`	vulnerable
Ubuntu	nss	26.04	`2:3.120-1ubuntu2.1`	fixed
Ubuntu	nss	pro	`2:3.45-1ubuntu2`	vulnerable
Ubuntu	nss	pro	`2:3.47-1ubuntu1`	vulnerable
Ubuntu	nss	pro	`2:3.47-1ubuntu2`	vulnerable
Ubuntu	nss	pro	`2:3.48-1ubuntu1`	vulnerable
Ubuntu	nss	pro	`2:3.49.1-1ubuntu1`	vulnerable
Ubuntu	nss	pro	`2:3.49.1-1ubuntu1.1`	vulnerable
Ubuntu	nss	pro	`2:3.49.1-1ubuntu1.2`	vulnerable
Ubuntu	nss	pro	`2:3.49.1-1ubuntu1.4`	vulnerable
Ubuntu	nss	pro	`2:3.49.1-1ubuntu1.5`	vulnerable
Ubuntu	nss	pro	`2:3.49.1-1ubuntu1.6`	vulnerable
Ubuntu	nss	pro	`2:3.49.1-1ubuntu1.7`	vulnerable
Ubuntu	nss	pro	`2:3.49.1-1ubuntu1.8`	vulnerable
Ubuntu	nss	pro	`2:3.49.1-1ubuntu1.9`	vulnerable
Ubuntu	nss	pro	`2:3.98-0ubuntu0.20.04.1`	vulnerable
Ubuntu	nss	pro	`2:3.98-0ubuntu0.20.04.2`	vulnerable
Ubuntu	nss	pro	`2:3.98-0ubuntu0.20.04.2+esm1`	vulnerable
Ubuntu	nss	pro	`2:3.98-0ubuntu0.20.04.2+esm2`	vulnerable
Ubuntu	mozjs52	18.04	`52.3.1-0ubuntu3`	vulnerable
Ubuntu	mozjs52	18.04	`52.3.1-7fakesync1`	vulnerable
Ubuntu	mozjs52	18.04	`52.8.1-0ubuntu0.18.04.1`	vulnerable
Ubuntu	mozjs52	18.04	`52.9.1-0ubuntu0.18.04.1`	vulnerable
Ubuntu	mozjs38	18.04	`38.8.0~repack1-0ubuntu1`	vulnerable
Ubuntu	mozjs38	18.04	`38.8.0~repack1-0ubuntu3`	vulnerable
Ubuntu	mozjs38	18.04	`38.8.0~repack1-0ubuntu4`	vulnerable
Ubuntu	mozjs68	20.04	`68.5.0-1~fakesync`	vulnerable
Ubuntu	mozjs68	20.04	`68.5.0-2~fakesync`	vulnerable
Ubuntu	mozjs68	20.04	`68.6.0-1`	vulnerable
Ubuntu	mozjs68	20.04	`68.6.0-1ubuntu1`	vulnerable
Ubuntu	mozjs52	20.04	`52.9.1-1build1`	vulnerable
Ubuntu	mozjs52	20.04	`52.9.1-1ubuntu3`	vulnerable
Ubuntu	mozjs102	22.04	`102.11.0-0ubuntu0.22.04.1`	vulnerable
Ubuntu	mozjs102	22.04	`102.12.0-0ubuntu0.22.04.1`	vulnerable
Ubuntu	mozjs102	22.04	`102.13.0-0ubuntu0.22.04.1`	vulnerable
Ubuntu	mozjs102	22.04	`102.15.1-0ubuntu0.22.04.1`	vulnerable
Ubuntu	mozjs78	22.04	`78.13.0-1`	vulnerable
Ubuntu	mozjs78	22.04	`78.15.0-2`	vulnerable
Ubuntu	mozjs78	22.04	`78.15.0-4ubuntu1`	vulnerable
Ubuntu	mozjs91	22.04	`91.5.1-0ubuntu1`	vulnerable
Ubuntu	mozjs91	22.04	`91.6.0-1`	vulnerable
Ubuntu	mozjs91	22.04	`91.6.0-2`	vulnerable
Ubuntu	mozjs91	22.04	`91.7.0-2`	vulnerable
Ubuntu	mozjs91	22.04	`91.10.0-0ubuntu1`	vulnerable
Ubuntu	nss	22.04	`2:3.68-1ubuntu1`	vulnerable
Ubuntu	nss	22.04	`2:3.68-1ubuntu2`	vulnerable
Ubuntu	nss	22.04	`2:3.68.2-0ubuntu1`	vulnerable
Ubuntu	nss	22.04	`2:3.68.2-0ubuntu1.1`	vulnerable
Ubuntu	nss	22.04	`2:3.68.2-0ubuntu1.2`	vulnerable
Ubuntu	nss	22.04	`2:3.98-0ubuntu0.22.04.1`	vulnerable
Ubuntu	nss	22.04	`2:3.98-0ubuntu0.22.04.2`	vulnerable
Ubuntu	nss	22.04	`2:3.98-0ubuntu0.22.04.3`	vulnerable
Ubuntu	nss	22.04	`2:3.98-0ubuntu0.22.04.4`	fixed
Ubuntu	thunderbird	22.04	`1:91.1.2+build1-0ubuntu1`	vulnerable
Ubuntu	thunderbird	22.04	`1:91.3.0+build2-0ubuntu1`	vulnerable
Ubuntu	thunderbird	22.04	`1:91.3.1+build1-0ubuntu1`	vulnerable
Ubuntu	thunderbird	22.04	`1:91.3.2+build1-0ubuntu1`	vulnerable
Ubuntu	thunderbird	22.04	`1:91.4.0+build1.1-0ubuntu1`	vulnerable
Ubuntu	thunderbird	22.04	`1:91.4.0+build2-0ubuntu1`	vulnerable
Ubuntu	thunderbird	22.04	`1:91.5.0+build1-0ubuntu1`	vulnerable
Ubuntu	thunderbird	22.04	`1:91.5.1+build1-0ubuntu1`	vulnerable
Ubuntu	thunderbird	22.04	`1:91.6.1+build1-0ubuntu1`	vulnerable
Ubuntu	thunderbird	22.04	`1:91.7.0+build1-0ubuntu1`	vulnerable
Ubuntu	thunderbird	22.04	`1:91.7.0+build2-0ubuntu1`	vulnerable
Ubuntu	thunderbird	22.04	`1:91.8.0+build2-0ubuntu1`	vulnerable
Ubuntu	thunderbird	22.04	`1:91.9.1+build1-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:91.11.0+build2-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:102.2.2+build1-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:102.4.2+build2-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:102.7.1+build2-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:102.8.0+build2-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:102.9.0+build1-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:102.10.0+build2-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:102.11.0+build1-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:102.13.0+build1-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:102.15.0+build1-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:102.15.1+build1-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:115.3.1+build1-0ubuntu0.22.04.2`	vulnerable
Ubuntu	thunderbird	22.04	`1:115.4.1+build1-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:115.5.0+build1-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:115.6.0+build2-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:115.8.1+build1-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:115.9.0+build1-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:115.10.1+build1-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:115.11.0+build2-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:115.12.0+build3-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:115.13.0+build5-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:115.15.0+build1-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:115.16.0+build2-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:115.18.0+build1-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:128.12.0+build1-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:140.7.1+build1-0ubuntu0.22.04.1`	vulnerable
Ubuntu	mozjs102	24.04	`102.15.1-1`	vulnerable
Ubuntu	mozjs102	24.04	`102.15.1-3ubuntu2`	vulnerable
Ubuntu	mozjs115	24.04	`115.3.0-0ubuntu1`	vulnerable
Ubuntu	mozjs115	24.04	`115.4.0-2`	vulnerable
Ubuntu	mozjs115	24.04	`115.5.0-1`	vulnerable
Ubuntu	mozjs115	24.04	`115.6.0-1`	vulnerable
Ubuntu	mozjs115	24.04	`115.7.0-4`	vulnerable
Ubuntu	mozjs115	24.04	`115.8.0-1`	vulnerable
Ubuntu	mozjs115	24.04	`115.9.0-1`	vulnerable
Ubuntu	mozjs115	24.04	`115.9.0-1build1`	vulnerable
Ubuntu	mozjs115	24.04	`115.10.0-1`	vulnerable
Ubuntu	nss	24.04	`2:3.92-1`	vulnerable
Ubuntu	nss	24.04	`2:3.94-1`	vulnerable
Ubuntu	nss	24.04	`2:3.95-1`	vulnerable
Ubuntu	nss	24.04	`2:3.96.1-1`	vulnerable
Ubuntu	nss	24.04	`2:3.98-1`	vulnerable
Ubuntu	nss	24.04	`2:3.98-1build1`	vulnerable
Ubuntu	nss	24.04	`2:3.98-1ubuntu0.1`	vulnerable
Ubuntu	nss	24.04	`2:3.98-1ubuntu0.2`	fixed
Ubuntu	nss	25.10	`2:3.108-1ubuntu1`	vulnerable
Ubuntu	nss	25.10	`2:3.110-1`	vulnerable
Ubuntu	nss	25.10	`2:3.111-1`	vulnerable
Ubuntu	nss	25.10	`2:3.112-1`	vulnerable
Ubuntu	nss	25.10	`2:3.114-1`	vulnerable
Ubuntu	nss	25.10	`2:3.114-1ubuntu0.1`	vulnerable
Ubuntu	nss	25.10	`2:3.114-1ubuntu0.2`	fixed
Ubuntu	nss	26.04	`2:3.114-1`	vulnerable
Ubuntu	nss	26.04	`2:3.117-1`	vulnerable
Ubuntu	nss	26.04	`2:3.119-1`	vulnerable
Ubuntu	nss	26.04	`2:3.120-1`	vulnerable
Ubuntu	nss	26.04	`2:3.120-1ubuntu1`	vulnerable
Ubuntu	nss	26.04	`2:3.120-1ubuntu2`	vulnerable
Ubuntu	nss	26.04	`2:3.120-1ubuntu2.1`	fixed
Cpe	firefox	Not reported	`152.0.0`	fixed
Cpe	thunderbird	Not reported	`152.0.0`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	nss	source	sid	`2:3.124-1`	not yet assigned	Not reported	Not reported
Debian	nss	source	forky	`2:3.124-1`	not yet assigned	Not reported	Not reported
Debian	nss	source	trixie	`2:3.110-1+deb13u3`	not yet assigned	Not reported	Not reported
Debian	nss	source	bookworm	`2:3.87.1-1+deb12u3`	not yet assigned	Not reported	Not reported
Cpe	nss	cpe	Not reported	`2:3.98-1ubuntu0.2`	Not reported	Not reported	Not reported
Cpe	libnss3	cpe	Not reported	`2:3.98-1ubuntu0.2`	Not reported	Not reported	Not reported
Cpe	libnss3-dev	cpe	Not reported	`2:3.98-1ubuntu0.2`	Not reported	Not reported	Not reported
Cpe	libnss3-tools	cpe	Not reported	`2:3.98-1ubuntu0.2`	Not reported	Not reported	Not reported
Cpe	firefox	cpe	Not reported	`152.0.0`	Not reported	Not reported	Not reported
Cpe	thunderbird	cpe	Not reported	`152.0.0`	Not reported	Not reported	Not reported
Ubuntu	nss	deb	22.04	`2:3.98-0ubuntu0.22.04.4`	Not reported	USN-8481-1	Not reported
Ubuntu	nss	deb	24.04	`2:3.98-1ubuntu0.2`	Not reported	USN-8481-1	Not reported
Ubuntu	nss	deb	25.10	`2:3.114-1ubuntu0.2`	Not reported	USN-8481-1	Not reported
Ubuntu	nss	deb	26.04	`2:3.120-1ubuntu2.1`	Not reported	USN-8481-1	Not reported
Ubuntu	nss	deb	22.04	`2:3.98-0ubuntu0.22.04.4`	Not reported	UBUNTU-CVE-2026-12318	Not reported
Ubuntu	nss	deb	24.04	`2:3.98-1ubuntu0.2`	Not reported	UBUNTU-CVE-2026-12318	Not reported
Ubuntu	nss	deb	25.10	`2:3.114-1ubuntu0.2`	Not reported	UBUNTU-CVE-2026-12318	Not reported
Ubuntu	nss	deb	26.04	`2:3.120-1ubuntu2.1`	Not reported	UBUNTU-CVE-2026-12318	Not reported
Cpe	firefox	cpe	Not reported	`152.0.0`	Not reported	NVD-CVE-2026-12318	Not reported
Cpe	thunderbird	cpe	Not reported	`152.0.0`	Not reported	NVD-CVE-2026-12318	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libnss3]Affected
Source package: [nss]
Details (4)
- 2:3.87.1-1+deb12u2 · amd64 · bookworm
  Affected · Fixed: 2:3.87.1-1+deb12u3
  nvd · nss · debian · bookworm; nvd · nss · debian · 12
- 2:3.87.1-1+deb12u2 · arm64 · bookworm
  Affected · Fixed: 2:3.87.1-1+deb12u3
  nvd · nss · debian · bookworm; nvd · nss · debian · 12
- 2:3.87.1-1+deb12u4 · amd64 · bookworm-security
  Fixed · Fixed: 2:3.87.1-1+deb12u3
  nvd · nss · debian · bookworm; nvd · nss · debian · 12
- 2:3.87.1-1+deb12u4 · arm64 · bookworm-security
  Fixed · Fixed: 2:3.87.1-1+deb12u3
  nvd · nss · debian · bookworm; nvd · nss · debian · 12
[libnss3-dev]Affected
Source package: [nss]
Details (4)
- 2:3.87.1-1+deb12u2 · amd64 · bookworm
  Affected · Fixed: 2:3.87.1-1+deb12u3
  nvd · nss · debian · bookworm; nvd · nss · debian · 12
- 2:3.87.1-1+deb12u2 · arm64 · bookworm
  Affected · Fixed: 2:3.87.1-1+deb12u3
  nvd · nss · debian · bookworm; nvd · nss · debian · 12
- 2:3.87.1-1+deb12u4 · amd64 · bookworm-security
  Fixed · Fixed: 2:3.87.1-1+deb12u3
  nvd · nss · debian · bookworm; nvd · nss · debian · 12
- 2:3.87.1-1+deb12u4 · arm64 · bookworm-security
  Fixed · Fixed: 2:3.87.1-1+deb12u3
  nvd · nss · debian · bookworm; nvd · nss · debian · 12
[libnss3-tools]Affected
Source package: [nss]
Details (4)
- 2:3.87.1-1+deb12u2 · amd64 · bookworm
  Affected · Fixed: 2:3.87.1-1+deb12u3
  nvd · nss · debian · bookworm; nvd · nss · debian · 12
- 2:3.87.1-1+deb12u2 · arm64 · bookworm
  Affected · Fixed: 2:3.87.1-1+deb12u3
  nvd · nss · debian · bookworm; nvd · nss · debian · 12
- 2:3.87.1-1+deb12u4 · amd64 · bookworm-security
  Fixed · Fixed: 2:3.87.1-1+deb12u3
  nvd · nss · debian · bookworm; nvd · nss · debian · 12
- 2:3.87.1-1+deb12u4 · arm64 · bookworm-security
  Fixed · Fixed: 2:3.87.1-1+deb12u3
  nvd · nss · debian · bookworm; nvd · nss · debian · 12

[Debian 13 (Trixie)]

[libnss3]Fixed
Source package: [nss]
Details (4)
- 2:3.110-1+deb13u3 · amd64 · trixie
  Fixed · Fixed: 2:3.110-1+deb13u3
  nvd · nss · debian · 13
- 2:3.110-1+deb13u3 · arm64 · trixie
  Fixed · Fixed: 2:3.110-1+deb13u3
  nvd · nss · debian · 13
- 2:3.110-1+deb13u4 · amd64 · trixie-security
  Fixed · Fixed: 2:3.110-1+deb13u3
  nvd · nss · debian · 13
- 2:3.110-1+deb13u4 · arm64 · trixie-security
  Fixed · Fixed: 2:3.110-1+deb13u3
  nvd · nss · debian · 13
[libnss3-dev]Fixed
Source package: [nss]
Details (4)
- 2:3.110-1+deb13u3 · amd64 · trixie
  Fixed · Fixed: 2:3.110-1+deb13u3
  nvd · nss · debian · 13
- 2:3.110-1+deb13u3 · arm64 · trixie
  Fixed · Fixed: 2:3.110-1+deb13u3
  nvd · nss · debian · 13
- 2:3.110-1+deb13u4 · amd64 · trixie-security
  Fixed · Fixed: 2:3.110-1+deb13u3
  nvd · nss · debian · 13
- 2:3.110-1+deb13u4 · arm64 · trixie-security
  Fixed · Fixed: 2:3.110-1+deb13u3
  nvd · nss · debian · 13
[libnss3-tools]Fixed
Source package: [nss]
Details (4)
- 2:3.110-1+deb13u3 · amd64 · trixie
  Fixed · Fixed: 2:3.110-1+deb13u3
  nvd · nss · debian · 13
- 2:3.110-1+deb13u3 · arm64 · trixie
  Fixed · Fixed: 2:3.110-1+deb13u3
  nvd · nss · debian · 13
- 2:3.110-1+deb13u4 · amd64 · trixie-security
  Fixed · Fixed: 2:3.110-1+deb13u3
  nvd · nss · debian · 13
- 2:3.110-1+deb13u4 · arm64 · trixie-security
  Fixed · Fixed: 2:3.110-1+deb13u3
  nvd · nss · debian · 13

Observed: Oct 27, 2026, 7:30:50 PM 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] · [Ubuntu Security Notices (USN)]