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7.5
Red Hat Python Library Exposes Sensitive Data
RHSA-2026:3359
Summary
A security update is available for Red Hat's Python library, pyasn1, which fixes a weakness that could allow an attacker to expose sensitive information. This issue affects systems using the library, potentially putting data at risk. Update your system to the latest version to protect your data.
What to do
- Update redhat python-pyasn1 to version 0:0.4.8-7.el9_7.
- Update redhat python3-pyasn1 to version 0:0.4.8-7.el9_7.
- Update redhat python3-pyasn1-modules to version 0:0.4.8-7.el9_7.
Affected software
| Vendor | Product | Affected versions | Fix available |
|---|---|---|---|
| redhat | python-pyasn1 | <= 0:0.4.8-7.el9_7 | 0:0.4.8-7.el9_7 |
| redhat | python3-pyasn1 | <= 0:0.4.8-7.el9_7 | 0:0.4.8-7.el9_7 |
| redhat | python3-pyasn1-modules | <= 0:0.4.8-7.el9_7 | 0:0.4.8-7.el9_7 |
Original title
Red Hat Security Advisory: python-pyasn1 security update
osv CVSS3.1
7.5
- https://access.redhat.com/errata/RHSA-2026:3359 Vendor Advisory
- https://access.redhat.com/security/updates/classification/#important Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2430472 Third Party Advisory
- https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_3359.j... Vendor Advisory
- https://access.redhat.com/security/cve/CVE-2026-23490 Third Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2026-23490 Vendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-23490 Vendor Advisory
- https://github.com/pyasn1/pyasn1/commit/3908f144229eed4df24bd569d16e5991ace44970 Third Party Advisory
- https://github.com/pyasn1/pyasn1/releases/tag/v0.6.2 Third Party Advisory
- https://github.com/pyasn1/pyasn1/security/advisories/GHSA-63vm-454h-vhhq Third Party Advisory
Published: 26 Feb 2026 · Updated: 13 Mar 2026 · First seen: 10 Mar 2026