CVE-2026-48863

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-07-16. the CNA's CVSS baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:redhat, epss, ghsa
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: 1%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(medium)
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%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
55%
KEV
Not listed

Published

July 16, 2026

Last Modified

September 1, 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.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
libsolv0.7.17-1 ... 0.7.39-1 (25 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
libsolv0.7.23-1 ... 0.7.39-1 (20 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
libsolv0.7.32-1 ... 0.7.39-1 (6 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
libsolv0.7.32-1, 0.7.35-1, 0.7.36-1, 0.7.37-10.7.38-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 127× 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.

Showing the most recent 100 of 239 total refreshes for this CVE.

  1. 2026-09-11 14:53 UTCEPSS rescore
  2. 2026-09-10 09:35 UTCEPSS rescore
  3. 2026-09-08 22:01 UTCEPSS rescore
  4. 2026-09-08 00:39 UTCEG score recompute
  5. 2026-09-08 00:39 UTCVendor advisory
  6. 2026-09-08 00:39 UTCGHSA enrichment
  7. 2026-09-07 16:01 UTCEPSS rescore
  8. 2026-09-06 13:47 UTCEPSS rescore
  9. 2026-09-06 13:27 UTCVendor advisory
  10. 2026-09-06 13:27 UTCGHSA enrichment
  11. 2026-09-05 20:44 UTCEG score recompute
  12. 2026-09-05 20:44 UTCVendor advisory
  13. 2026-09-05 20:44 UTCGHSA enrichment
  14. 2026-09-04 05:06 UTCEPSS rescore
  15. 2026-09-02 14:12 UTCEPSS rescore
  16. 2026-09-01 13:54 UTCEPSS rescore
  17. 2026-09-01 12:18 UTCEG score recompute
  18. 2026-09-01 12:18 UTCVendor advisory
  19. 2026-09-01 12:18 UTCGHSA enrichment
  20. 2026-09-01 04:40 UTCEPSS rescore
  21. 2026-08-31 15:39 UTCEG score recompute
  22. 2026-08-31 15:39 UTCVendor advisory
  23. 2026-08-31 15:39 UTCGHSA enrichment
  24. 2026-08-31 14:45 UTCEG score recompute
  25. 2026-08-31 14:45 UTCVendor advisory
Show 75 more
  1. 2026-08-31 14:45 UTCGHSA enrichment
  2. 2026-08-31 05:33 UTCEG score recompute
  3. 2026-08-31 05:33 UTCVendor advisory
  4. 2026-08-31 05:33 UTCGHSA enrichment
  5. 2026-08-30 19:17 UTCEPSS rescore
  6. 2026-08-30 16:37 UTCVendor advisory
  7. 2026-08-30 16:37 UTCGHSA enrichment
  8. 2026-08-30 03:41 UTCEG score recompute
  9. 2026-08-30 03:41 UTCVendor advisory
  10. 2026-08-30 03:41 UTCGHSA enrichment
  11. 2026-08-30 01:22 UTCEPSS rescore
  12. 2026-08-28 21:41 UTCEPSS rescore
  13. 2026-08-28 01:51 UTCEG score recompute
  14. 2026-08-28 01:51 UTCVendor advisory
  15. 2026-08-28 01:51 UTCGHSA enrichment
  16. 2026-08-27 14:25 UTCEPSS rescore
  17. 2026-08-27 12:35 UTCVendor advisory
  18. 2026-08-27 12:35 UTCGHSA enrichment
  19. 2026-08-26 22:57 UTCEG score recompute
  20. 2026-08-26 22:57 UTCVendor advisory
  21. 2026-08-26 22:57 UTCGHSA enrichment
  22. 2026-08-26 14:46 UTCEPSS rescore
  23. 2026-08-26 04:40 UTCVendor advisory
  24. 2026-08-26 04:40 UTCGHSA enrichment
  25. 2026-08-25 15:44 UTCEG score recompute
  26. 2026-08-25 15:44 UTCVendor advisory
  27. 2026-08-25 15:44 UTCGHSA enrichment
  28. 2026-08-25 13:49 UTCEPSS rescore
  29. 2026-08-25 02:24 UTCEG score recompute
  30. 2026-08-25 02:24 UTCVendor advisory
  31. 2026-08-25 02:24 UTCGHSA enrichment
  32. 2026-08-24 13:29 UTCEG score recompute
  33. 2026-08-24 13:29 UTCVendor advisory
  34. 2026-08-24 13:29 UTCGHSA enrichment
  35. 2026-08-24 12:20 UTCEG score recompute
  36. 2026-08-24 12:20 UTCVendor advisory
  37. 2026-08-24 12:20 UTCGHSA enrichment
  38. 2026-08-24 06:25 UTCVendor advisory
  39. 2026-08-24 06:25 UTCGHSA enrichment
  40. 2026-08-23 17:19 UTCVendor advisory
  41. 2026-08-23 17:19 UTCGHSA enrichment
  42. 2026-08-23 04:23 UTCEG score recompute
  43. 2026-08-23 04:23 UTCVendor advisory
  44. 2026-08-23 04:23 UTCGHSA enrichment
  45. 2026-08-23 00:19 UTCEPSS rescore
  46. 2026-08-22 15:28 UTCVendor advisory
  47. 2026-08-22 15:28 UTCGHSA enrichment
  48. 2026-08-22 02:32 UTCEG score recompute
  49. 2026-08-22 02:32 UTCVendor advisory
  50. 2026-08-22 02:32 UTCGHSA enrichment
  51. 2026-08-21 23:49 UTCEPSS rescore
  52. 2026-08-21 13:21 UTCEG score recompute
  53. 2026-08-21 13:21 UTCVendor advisory
  54. 2026-08-21 13:21 UTCGHSA enrichment
  55. 2026-08-21 12:30 UTCEG score recompute
  56. 2026-08-21 12:30 UTCVendor advisory
  57. 2026-08-21 12:30 UTCGHSA enrichment
  58. 2026-08-21 03:33 UTCEG score recompute
  59. 2026-08-21 03:33 UTCVendor advisory
  60. 2026-08-21 03:33 UTCGHSA enrichment
  61. 2026-08-20 22:55 UTCEPSS rescore
  62. 2026-08-20 14:37 UTCVendor advisory
  63. 2026-08-20 14:37 UTCGHSA enrichment
  64. 2026-08-20 00:05 UTCEG score recompute
  65. 2026-08-20 00:05 UTCVendor advisory
  66. 2026-08-20 00:05 UTCGHSA enrichment
  67. 2026-08-19 17:04 UTCEPSS rescore
  68. 2026-08-19 09:13 UTCVendor advisory
  69. 2026-08-19 09:13 UTCGHSA enrichment
  70. 2026-08-18 19:57 UTCEG score recompute
  71. 2026-08-18 19:57 UTCVendor advisory
  72. 2026-08-18 19:56 UTCGHSA enrichment
  73. 2026-08-18 13:48 UTCEPSS rescore
  74. 2026-08-18 05:56 UTCGHSA enrichment
  75. 2026-08-17 16:09 UTCEG score recompute

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 September 1, 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 1% probability of exploitation in the next 30 days, which ranks it in the top 44.8% of all scored CVEs.
What is the CVSS score of CVE-2026-48863?
CVE-2026-48863 has a CVSS v4.0 base score of 7.5 (CNA self-assessment; NVD's own analysis pending).
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

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