CVE-2026-42327
rust-openssl: rust-openssl provides OpenSSL bindings for the Rust programming language
CVE-2026-42327 is fixed in 31 products on 1 platform, first by DEBIAN-CVE-2026-42327, released May 14, 2026. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
n/a
important
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0021
11th percentile
rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.9.7 to before 0.10.79, X509Ref::ocsp_responders returns OCSP responder URLs from a certificate's AIA extension as OpensslString, whose Deref<Target = str> wraps the raw bytes with str::from_utf8_unchecked. OpenSSL does not enforce that the underlying IA5String is ASCII, so a certificate with non-UTF-8 bytes in its OCSP accessLocation causes safe Rust code to construct a &str that violates the UTF-8 invariant — resulting in undefined behavior. This vulnerability is fixed in 0.10.79.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| afterburn · opensuse-leap 16.0 | 5.10.0.git73.b97f772-160000.1.1 | OPENSUSE-SU-2026:21386-1 | Jul 20, 2026 |
| afterburn · sles 16.0 | 5.10.0.git73.b97f772-160000.1.1 | SUSE-SU-2026:22827-1 | Jul 20, 2026 |
| agama · opensuse-leap 16.0 | 17+647.daf9950fc-160000.12.1 | OPENSUSE-SU-2026:21292-1 | Jul 10, 2026 |
| agama · sles 16.0 | 17+647.daf9950fc-160000.12.1 | SUSE-SU-2026:22622-1 | Jul 10, 2026 |
| aws-nitro-enclaves-cli · amzn 2023 | 1.4.5-0.amzn2023 | ALAS2023-2026-2034 | Aug 3, 2026 |
| aws-nitro-enclaves-cli · opensuse-leap 16.0 | 1.4.5~git0.18a5f6f-160000.1.1 | OPENSUSE-SU-2026:21406-1 | Jul 22, 2026 |
| aws-nitro-enclaves-cli · sles 15.6 | 1.4.5~git0.18a5f6f-150600.10.12.1 | SUSE-SU-2026:3152-1 | Jul 21, 2026 |
| aws-nitro-enclaves-cli · sles 15.7 | 1.4.5~git0.18a5f6f-150600.10.12.1 | SUSE-SU-2026:3152-1 | Jul 21, 2026 |
| aws-nitro-enclaves-cli · sles 16.0 | 1.4.5~git0.18a5f6f-160000.1.1 | SUSE-SU-2026:22841-1 | Jul 22, 2026 |
| aws-nitro-enclaves-cli-devel · amzn 2023 | 1.4.5-0.amzn2023 | ALAS2023-2026-2034 | Aug 3, 2026 |
| aws-nitro-enclaves-cli-integration-tests · amzn 2023 | 1.4.5-0.amzn2023 | ALAS2023-2026-2034 | Aug 3, 2026 |
| clamav1.5 · amzn 2023 | 1.5.2-1.amzn2023.0.2 | ALAS2023-2026-1870 | Jun 22, 2026 |
| clamav1.5-data · amzn 2023 | 1.5.2-1.amzn2023.0.2 | ALAS2023-2026-1870 | Jun 22, 2026 |
| clamav1.5-debuginfo · amzn 2023 | 1.5.2-1.amzn2023.0.2 | ALAS2023-2026-1870 | Jun 22, 2026 |
| clamav1.5-debugsource · amzn 2023 | 1.5.2-1.amzn2023.0.2 | ALAS2023-2026-1870 | Jun 22, 2026 |
| clamav1.5-devel · amzn 2023 | 1.5.2-1.amzn2023.0.2 | ALAS2023-2026-1870 | Jun 22, 2026 |
| clamav1.5-doc · amzn 2023 | 1.5.2-1.amzn2023.0.2 | ALAS2023-2026-1870 | Jun 22, 2026 |
| clamav1.5-filesystem · amzn 2023 | 1.5.2-1.amzn2023.0.2 | ALAS2023-2026-1870 | Jun 22, 2026 |
| clamav1.5-freshclam · amzn 2023 | 1.5.2-1.amzn2023.0.2 | ALAS2023-2026-1870 | Jun 22, 2026 |
| clamav1.5-freshclam-debuginfo · amzn 2023 | 1.5.2-1.amzn2023.0.2 | ALAS2023-2026-1870 | Jun 22, 2026 |
| clamav1.5-lib · amzn 2023 | 1.5.2-1.amzn2023.0.2 | ALAS2023-2026-1870 | Jun 22, 2026 |
| clamav1.5-lib-debuginfo · amzn 2023 | 1.5.2-1.amzn2023.0.2 | ALAS2023-2026-1870 | Jun 22, 2026 |
| clamav1.5-milter · amzn 2023 | 1.5.2-1.amzn2023.0.2 | ALAS2023-2026-1870 | Jun 22, 2026 |
| clamav1.5-milter-debuginfo · amzn 2023 | 1.5.2-1.amzn2023.0.2 | ALAS2023-2026-1870 | Jun 22, 2026 |
| clamd1.5 · amzn 2023 | 1.5.2-1.amzn2023.0.2 | ALAS2023-2026-1870 | Jun 22, 2026 |
| clamd1.5-debuginfo · amzn 2023 | 1.5.2-1.amzn2023.0.2 | ALAS2023-2026-1870 | Jun 22, 2026 |
| himmelblau · sles 15.6 | 2.3.14+git0.e23b4c54-150500.11.12.1 | SUSE-SU-2026:3576-1 | Aug 11, 2026 |
| libkrun · opensuse-leap 16.0 | 1.4.10-160000.3.1 | OPENSUSE-SU-2026:21464-1 | Jul 28, 2026 |
| python-cryptography · opensuse-leap 16.0 | 44.0.3-160000.4.1 | OPENSUSE-SU-2026:21294-1 | Jul 10, 2026 |
| python-cryptography · sles 15.6 | 41.0.3-150600.23.9.1 | SUSE-SU-2026:3026-1 | Jul 15, 2026 |
| python-cryptography · sles 15.7 | 41.0.3-150600.23.9.1 | SUSE-SU-2026:3026-1 | Jul 15, 2026 |
| python-cryptography · sles 16.0 | 44.0.3-160000.4.1 | SUSE-SU-2026:22624-1 | Jul 10, 2026 |
| python-maturin · opensuse-leap 16.0 | 1.8.7-160000.5.1 | OPENSUSE-SU-2026:21285-1 | Jul 10, 2026 |
| python-maturin · sles 16.0 | 1.8.7-160000.5.1 | SUSE-SU-2026:22615-1 | Jul 10, 2026 |
| rust-keylime · opensuse-leap 16.0 | 0.2.9+49-160000.1.1 | OPENSUSE-SU-2026:21274-1 | Jul 9, 2026 |
| rust-keylime · sles 16.0 | 0.2.9+49-160000.1.1 | SUSE-SU-2026:22583-1 | Jul 9, 2026 |
| rust-openssl · Debian 14 | 0.10.79-1 | DEBIAN-CVE-2026-42327 | May 14, 2026 |
| rustup · opensuse-leap 16.0 | 1.29.1~0-160000.1.1 | OPENSUSE-SU-2026:22016-1 | Oct 2, 2026 |
| rustup · sles 15.6 | 1.28.2~0-150600.10.13.1 | SUSE-SU-2026:2832-1 | Jul 9, 2026 |
| rustup · sles 15.7 | 1.28.2~0-150600.10.13.1 | SUSE-SU-2026:2832-1 | Jul 9, 2026 |
| rustup · sles 16.0 | 1.29.1~0-160000.1.1 | SUSE-SU-2026:24014-1 | Oct 2, 2026 |
| sccache · opensuse-leap 16.0 | 0.18.0~2-160000.1.1 | OPENSUSE-SU-2026:21982-1 | Sep 30, 2026 |
| sccache · sles 15.6 | 0.16.0~0-150600.10.11.1 | SUSE-SU-2026:3022-1 | Jul 15, 2026 |
| sccache · sles 15.7 | 0.16.0~0-150600.10.11.1 | SUSE-SU-2026:3022-1 | Jul 15, 2026 |
| sccache · sles 16.0 | 0.18.0~2-160000.1.1 | SUSE-SU-2026:23983-1 | Sep 30, 2026 |
| sdbootutil · opensuse-leap 16.0 | 1+git20260908.c641fc2-160000.1.1 | OPENSUSE-SU-2026:21933-1 | Sep 23, 2026 |
| snpguest · opensuse-leap 16.0 | 0.10.0-160000.2.1 | OPENSUSE-SU-2026:21579-1 | Aug 13, 2026 |
| snpguest · sles 15.6 | 0.3.2-150600.3.14.1 | SUSE-SU-2026:3577-1 | Aug 11, 2026 |
| snpguest · sles 15.7 | 0.10.0-150700.3.6.1 | SUSE-SU-2026:3791-1 | Aug 25, 2026 |
| snpguest · sles 16.0 | 0.10.0-160000.2.1 | SUSE-SU-2026:23236-1 | Aug 13, 2026 |
| snphost · opensuse-leap 16.0 | 0.6.0-160000.3.1 | OPENSUSE-SU-2026:21638-1 | Aug 24, 2026 |
| snphost · sles 15.7 | 0.6.1-150700.3.6.1 | SUSE-SU-2026:3642-1 | Aug 18, 2026 |
| snphost · sles 16.0 | 0.6.0-160000.3.1 | SUSE-SU-2026:23327-1 | Aug 24, 2026 |
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