CVE-2026-48863

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-07-16. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
7.5
EG Score
7.5(high)
EG Risk
49(Track)
EG Risk 49/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
38%
KEV
Not listed

Published

July 16, 2026

Last Modified

July 18, 2026

Advisory Details (3)

Auto-updated Jul 16, 2026
Patch available. Sources: redhat, github_commit.
github_commit

commit 44f8c085045b (openSUSE/libsolv)

Fix landed in openSUSE/libsolv commit 44f8c085045b — awaiting tagged release

https://github.com/openSUSE/libsolv/commit/44f8c085045b1f771641091bbb2b810d12cff9e8#diff-309f245ec9b669ec78b8159c39e6f50130b4d4a0448f742685f7833d04bc4caaR592
redhat

2460975 – (CVE-2026-48863) CVE-2026-48863 libsolv: Stack-based buffer overflow in libsolv EdDSA PGP signature verification allows denial of service

https://bugzilla.redhat.com/show_bug.cgi?id=2460975
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-48863

Vendor Advisories for CVE-2026-48863(2)

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

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 18× in last 7d / 30× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-28 02:17 UTCEG score recompute
  2. 2026-07-28 02:17 UTCVendor advisory
  3. 2026-07-28 02:17 UTCGHSA enrichment
  4. 2026-07-27 13:21 UTCVendor advisory
  5. 2026-07-27 13:21 UTCGHSA enrichment
  6. 2026-07-27 00:24 UTCEG score recompute
  7. 2026-07-27 00:24 UTCVendor advisory
  8. 2026-07-27 00:24 UTCGHSA enrichment
  9. 2026-07-26 14:54 UTCEPSS rescore
  10. 2026-07-26 11:27 UTCEG score recompute
  11. 2026-07-26 11:27 UTCVendor advisory
  12. 2026-07-26 11:27 UTCGHSA enrichment
  13. 2026-07-25 14:18 UTCEPSS rescore
  14. 2026-07-24 14:18 UTCEPSS rescore
  15. 2026-07-23 14:18 UTCEPSS rescore
  16. 2026-07-23 03:18 UTCEG score recompute
  17. 2026-07-22 14:08 UTCEPSS rescore
  18. 2026-07-21 15:25 UTCEPSS rescore
  19. 2026-07-20 17:08 UTCEPSS rescore
  20. 2026-07-19 14:31 UTCEPSS rescore
  21. 2026-07-19 14:31 UTCEPSS rescore
  22. 2026-07-19 02:36 UTCEG score recompute
  23. 2026-07-19 02:36 UTCGHSA enrichment
  24. 2026-07-19 02:29 UTCEPSS rescore
  25. 2026-07-18 10:04 UTCEPSS rescore
Show 5 more
  1. 2026-07-17 02:46 UTCGHSA enrichment
  2. 2026-07-16 17:03 UTCEPSS rescore
  3. 2026-07-16 13:50 UTCGHSA enrichment
  4. 2026-07-16 00:54 UTCEG score recompute
  5. 2026-07-16 00:53 UTCMITRE cvelistV5first tracked

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-48863?
CVE-2026-48863 is a high vulnerability published on July 16, 2026. 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…
When was CVE-2026-48863 disclosed?
CVE-2026-48863 was first published in the National Vulnerability Database on July 16, 2026, with the most recent update on July 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-48863 actively exploited?
CVE-2026-48863 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 62.0% of all scored CVEs.
What is the CVSS score of CVE-2026-48863?
CVE-2026-48863 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-48863?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-48863, 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.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-48863

Explore →

Is Your Infrastructure Affected by CVE-2026-48863?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs