CVE-2026-9149

MEDIUMNVD 6.56.5—

6.5

A flaw was found in libsolv. This heap buffer overflow vulnerability occurs when a victim processes a specially crafted .solv file containing negative size values in the repo_add_solv function. This leads to an undersized memory allocation and a subsequent out-of-bounds write. An attacker could exploit this to cause a denial of service (DoS).

CVSS v3: 6.5
EG Score: 6.5(high)
EPSS: 9.6%
KEV: Not listed

Published

May 21, 2026

Last Modified

May 21, 2026

References (4)

secalert@redhathttps://access.redhat.com/security/cve/CVE-2026-9149
secalert@redhathttps://bugzilla.redhat.com/show_bug.cgi?id=2460380
secalert@redhathttps://github.com/openSUSE/libsolv/pull/617
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/openSUSE/libsolv/pull/617

Vendor Advisories for CVE-2026-9149(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

GHSA-9q56-xf64-q987
GitHub Security AdvisoriesMedium
A flaw was found in libsolv. This heap buffer overflow vulnerability occurs when a victim...

Frequently asked(5)

What is CVE-2026-9149?

CVE-2026-9149 is a medium vulnerability published on May 21, 2026. A flaw was found in libsolv. This heap buffer overflow vulnerability occurs when a victim processes a specially crafted .solv file containing negative size values in the repoaddsolv function. This leads to an undersized memory allocation and a subsequent out-of-bounds write. An attacker could…

When was CVE-2026-9149 disclosed?

CVE-2026-9149 was first published in the National Vulnerability Database on May 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-9149 actively exploited?

CVE-2026-9149 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 9.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-9149?

CVE-2026-9149 has a CVSS v3 base score of 6.5 (NVD).

How do I remediate CVE-2026-9149?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-9149, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2026-9149

📅 Published

🔄 Last Modified

🔗 References (4)

📣 Vendor Advisories for CVE-2026-9149(1)

❓ Frequently asked(5)