CVE catalog
CVE-2026-53938
OpenIDC/cjose is a C library implementing the Javascript Object Signing and Encryption (JOSE). Prior to version 0.6.2.5, cjose's JWE decryption path for the AES Key Wrap key-management algorithms (`al
- Severity
- High · CVSS 8.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.24% · Oct 25, 2026
OpenIDC/cjose is a C library implementing the Javascript Object Signing and Encryption (JOSE). Prior to version 0.6.2.5, cjose's JWE decryption path for the AES Key Wrap key-management algorithms (`alg` = `A128KW`, `A192KW`, `A256KW`) does not validate the length of the attacker-supplied `encrypted_key` (JWE Encrypted Key) before unwrapping it into a fixed-size, heap-allocated Content Encryption Key (CEK) buffer. A remote, unauthenticated attacker who can submit a crafted JWE to an application that decrypts it with an AES-KW symmetric key can trigger an out-of-bounds heap write, corrupting the heap. This leads at minimum to a crash (denial of service) and, depending on the heap layout and allocator, may be leverageable for further memory-corruption impact. `cjose_jwe_import()` / `cjose_jwe_decrypt()` are pre-authentication entry points: they parse and process fully attacker-controlled input. Upgrade to cjose 0.6.2.5 to receive a patch. If upgrading is not immediately possible, reject the AES Key Wrap algorithms (`A128KW`/`A192KW`/`A256KW`) for untrusted JWEs at the application layer.
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 | cjose | sid | 0.6.2.8-1 | fixed |
| Debian | cjose | forky | 0.6.2.8-1 | fixed |
| Debian | cjose | trixie | 0.6.2.3-1 | vulnerable |
| Debian | cjose | trixie-security | 0.6.2.3-1+deb13u1 | fixed |
| Debian | cjose | bookworm | 0.6.2.1-1+deb12u1 | vulnerable |
| Debian | cjose | bookworm-security | 0.6.2.1-1+deb12u1 | vulnerable |
| Suse | cjose | linux enterprise server 16.0 | 0.6.2.3-160000.3.1 | fixed |
| Suse | cjose | linux enterprise server for sap applications 16.0 | 0.6.2.3-160000.3.1 | fixed |
| Opensuse | cjose | leap 16.0 | 0.6.2.3-160000.3.1 | fixed |
| Suse | cjose | linux enterprise module for server applications 15 sp7 | 0.6.1-150600.18.3.1 | fixed |
| Suse | cjose | linux enterprise server 15 sp6-ltss | 0.6.1-150600.18.3.1 | fixed |
| Suse | cjose | linux enterprise server for sap applications 15 sp6 | 0.6.1-150600.18.3.1 | fixed |
| Suse | cjose | linux enterprise high performance computing 15 sp4-espos | 0.6.1-150100.4.9.1 | fixed |
| Suse | cjose | linux enterprise high performance computing 15 sp4-ltss | 0.6.1-150100.4.9.1 | fixed |
| Suse | cjose | linux enterprise high performance computing 15 sp5-espos | 0.6.1-150100.4.9.1 | fixed |
| Suse | cjose | linux enterprise high performance computing 15 sp5-ltss | 0.6.1-150100.4.9.1 | fixed |
| Suse | cjose | linux enterprise server 15 sp4-ltss | 0.6.1-150100.4.9.1 | fixed |
| Suse | cjose | linux enterprise server 15 sp5-ltss | 0.6.1-150100.4.9.1 | fixed |
| Suse | cjose | linux enterprise server for sap applications 15 sp4 | 0.6.1-150100.4.9.1 | fixed |
| Suse | cjose | linux enterprise server for sap applications 15 sp5 | 0.6.1-150100.4.9.1 | fixed |
| Suse | cjose | linux enterprise server 12 sp5-ltss | 0.6.1-7.8.1 | fixed |
| Suse | cjose | linux enterprise server ltss extended security 12 sp5 | 0.6.1-7.8.1 | fixed |
| Opensuse | cjose | tumbleweed | 0.6.2.8-2.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | cjose | source | sid | 0.6.2.7-1 | not yet assigned | Not reported | Not reported |
| Debian | cjose | source | forky | 0.6.2.7-1 | not yet assigned | Not reported | Not reported |
| Debian | cjose | source | trixie | 0.6.2.3-1+deb13u1 | not yet assigned | Not reported | Not reported |
| Debian | cjose | source | bookworm | (unfixed) | not yet assigned | Not reported | Not reported |
| Suse | cjose | rpm | linux enterprise server 16.0 | 0.6.2.3-160000.3.1 | Not reported | SUSE-SU-2026:23910-1 | Not reported |
| Suse | cjose | rpm | linux enterprise server for sap applications 16.0 | 0.6.2.3-160000.3.1 | Not reported | SUSE-SU-2026:23910-1 | Not reported |
| Opensuse | cjose | rpm | leap 16.0 | 0.6.2.3-160000.3.1 | Not reported | OPENSUSE-SU-2026:21944-1 | Not reported |
| Suse | cjose | rpm | linux enterprise module for server applications 15 sp7 | 0.6.1-150600.18.3.1 | Not reported | SUSE-SU-2026:4251-1 | Not reported |
| Suse | cjose | rpm | linux enterprise server 15 sp6-ltss | 0.6.1-150600.18.3.1 | Not reported | SUSE-SU-2026:4251-1 | Not reported |
| Suse | cjose | rpm | linux enterprise server for sap applications 15 sp6 | 0.6.1-150600.18.3.1 | Not reported | SUSE-SU-2026:4251-1 | Not reported |
| Suse | cjose | rpm | linux enterprise high performance computing 15 sp4-espos | 0.6.1-150100.4.9.1 | Not reported | SUSE-SU-2026:4253-1 | Not reported |
| Suse | cjose | rpm | linux enterprise high performance computing 15 sp4-ltss | 0.6.1-150100.4.9.1 | Not reported | SUSE-SU-2026:4253-1 | Not reported |
| Suse | cjose | rpm | linux enterprise high performance computing 15 sp5-espos | 0.6.1-150100.4.9.1 | Not reported | SUSE-SU-2026:4253-1 | Not reported |
| Suse | cjose | rpm | linux enterprise high performance computing 15 sp5-ltss | 0.6.1-150100.4.9.1 | Not reported | SUSE-SU-2026:4253-1 | Not reported |
| Suse | cjose | rpm | linux enterprise server 15 sp4-ltss | 0.6.1-150100.4.9.1 | Not reported | SUSE-SU-2026:4253-1 | Not reported |
| Suse | cjose | rpm | linux enterprise server 15 sp5-ltss | 0.6.1-150100.4.9.1 | Not reported | SUSE-SU-2026:4253-1 | Not reported |
| Suse | cjose | rpm | linux enterprise server for sap applications 15 sp4 | 0.6.1-150100.4.9.1 | Not reported | SUSE-SU-2026:4253-1 | Not reported |
| Suse | cjose | rpm | linux enterprise server for sap applications 15 sp5 | 0.6.1-150100.4.9.1 | Not reported | SUSE-SU-2026:4253-1 | Not reported |
| Suse | cjose | rpm | linux enterprise server 12 sp5-ltss | 0.6.1-7.8.1 | Not reported | SUSE-SU-2026:4237-1 | Not reported |
| Suse | cjose | rpm | linux enterprise server ltss extended security 12 sp5 | 0.6.1-7.8.1 | Not reported | SUSE-SU-2026:4237-1 | Not reported |
| Opensuse | cjose | rpm | tumbleweed | 0.6.2.8-2.1 | Not reported | OPENSUSE-SU-2026:11784-1 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libcjose0]Affected
Source package: [cjose]
Details (4)
0.6.2.1-1+deb12u1· amd64 · bookwormAffected
nvd · cjose · debian · bookworm; nvd · cjose · debian · 12
0.6.2.1-1+deb12u1· arm64 · bookwormAffected
nvd · cjose · debian · bookworm; nvd · cjose · debian · 12
0.6.2.1-1+deb12u1· amd64 · bookworm-securityAffected
nvd · cjose · debian · bookworm; nvd · cjose · debian · 12
0.6.2.1-1+deb12u1· arm64 · bookworm-securityAffected
nvd · cjose · debian · bookworm; nvd · cjose · debian · 12
- [libcjose-dev]Affected
Source package: [cjose]
Details (4)
0.6.2.1-1+deb12u1· amd64 · bookwormAffected
nvd · cjose · debian · bookworm; nvd · cjose · debian · 12
0.6.2.1-1+deb12u1· arm64 · bookwormAffected
nvd · cjose · debian · bookworm; nvd · cjose · debian · 12
0.6.2.1-1+deb12u1· amd64 · bookworm-securityAffected
nvd · cjose · debian · bookworm; nvd · cjose · debian · 12
0.6.2.1-1+deb12u1· arm64 · bookworm-securityAffected
nvd · cjose · debian · bookworm; nvd · cjose · debian · 12
[Debian 13 (Trixie)]
- [libcjose0]Affected
Source package: [cjose]
Details (3)
0.6.2.3-1+b1· amd64 · trixieAffected · Fixed:
0.6.2.3-1+deb13u1nvd · cjose · debian · 13
0.6.2.3-1+b1· arm64 · trixieAffected · Fixed:
0.6.2.3-1+deb13u1nvd · cjose · debian · 13
0.6.2.3-1+deb13u1· amd64 · trixie-securityFixed · Fixed:
0.6.2.3-1+deb13u1nvd · cjose · debian · 13
- [libcjose-dev]Affected
Source package: [cjose]
Details (3)
0.6.2.3-1+b1· amd64 · trixieAffected · Fixed:
0.6.2.3-1+deb13u1nvd · cjose · debian · 13
0.6.2.3-1+b1· arm64 · trixieAffected · Fixed:
0.6.2.3-1+deb13u1nvd · cjose · debian · 13
0.6.2.3-1+deb13u1· amd64 · trixie-securityFixed · Fixed:
0.6.2.3-1+deb13u1nvd · cjose · debian · 13
[openSUSE Tumbleweed]
- [libcjose0]Unknown
Source package: [cjose]
Details (1)
0.6.2.4-1.5· x86_64 · tumbleweedUnknown · Fixed:
0.6.2.8-2.1Version impact unknown
nvd · cjose · opensuse · tumbleweed
- [libcjose-devel]Unknown
Source package: [cjose]
Details (1)
0.6.2.4-1.5· x86_64 · tumbleweedUnknown · Fixed:
0.6.2.8-2.1Version impact unknown
nvd · cjose · opensuse · tumbleweed
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_11784-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-53938]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-53938]
- [https://osv.dev/vulnerability/SUSE-SU-2026:23910-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:4237-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:4251-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:4253-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:11784-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:21944-1]
- [https://security-tracker.debian.org/tracker/CVE-2026-53938]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53938.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-3626.json]
[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]