Vulnerability details
CVE-2026-48863
openSUSE libsolv
Libsolv: stack-based buffer overflow in libsolv eddsa pgp signature verification allows denial of service
CVSS 3.1
7.5High
Official description
A flaw was found in libsolv. A stack-based buffer overflow vulnerability exists in the PGP verification component due to incorrect length handling when copying EdDSA 's' MPI into a stack buffer. A remote attacker could craft a malicious Ed25519 PGP signature with mismatched MPI lengths. Processing this crafted signature could lead to a denial of service in automated package or repository processing workflows.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.5High | 3.1 | CVEProject cvelistV5 (CNA) (redhat) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 7.5High | 3.1 | CVEProject cvelistV5 (CNA) (redhat-SADP) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| openSUSE | libsolv | 0.6.4 ≤ v < 0.7.38 | CVEProject cvelistV5 (CNA) |
References and advisories
4- https://github.com/openSUSE/libsolv/commit/44f8c085045b1f771641091bbb2b810d12cff9e8#diff-309f245ec9b669ec78b8159c39e6f50130b4d4a0448f742685f7833d04bc4caaR592
- https://access.redhat.com/security/cve/CVE-2026-48863 vdb-entryx_refsource_REDHAT
- https://bugzilla.redhat.com/show_bug.cgi?id=2460975 issue-trackingx_refsource_REDHAT
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-48863.json x_sadp-csaf-vex
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Details
- Published
- 2026-07-16
- Last updated
- 2026-11-05
- State
- Published
- Assigner (CNA)
- redhat
Exploit prediction (EPSS)
0.82%
Probability of exploitation in 30 days
57.4%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- None
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-121Stack-based Buffer Overflow