CVE-2026-48864

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-26. a secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — Patch released this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

A fix is available — apply it.

A flaw was found in libsolv. This heap buffer overflow occurs during the decompression of attacker-controlled compressed data within .solv files due to insufficient input validation. An attacker can provide a specially crafted .solv file, which, when processed by a vulnerable application, can lead to out-of-bounds memory access. This could result in information disclosure, alteration of program execution, or a denial of service.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
11%
KEV
Not listed

Published

May 26, 2026

Last Modified

July 23, 2026

Advisory Details (3)

Auto-updated May 28, 2026
Patch available. Sources: redhat.
redhat

2460425 – (CVE-2026-48864) CVE-2026-48864 libsolv: Heap buffer overflow in libsolv repopagestore via unchecked decompression of malicious .solv page data

https://bugzilla.redhat.com/show_bug.cgi?id=2460425
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-48864
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:21333

Vendor Advisories for CVE-2026-48864(7)

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

Patch Availability(5)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatrhui5/rhua-rhel9:17847950762026-07-23redhat
redhatlibsolv-0:0.7.24-6.el9_82026-07-14redhat
redhatlibsolv-0:0.7.20-7.el8_102026-07-08redhat
redhatlibsolv-0:0.7.33-5.el10_22026-06-23redhat
redhatlibsolv-main-0.7.38-2.hum12026-05-27redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 46× 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 172 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-48864?
CVE-2026-48864 is a high vulnerability published on May 26, 2026. A flaw was found in libsolv. This heap buffer overflow occurs during the decompression of attacker-controlled compressed data within .solv files due to insufficient input validation. An attacker can provide a specially crafted .solv file, which, when processed by a vulnerable application, can lead…
When was CVE-2026-48864 disclosed?
CVE-2026-48864 was first published in the National Vulnerability Database on May 26, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-48864 actively exploited?
CVE-2026-48864 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 89.3% of all scored CVEs.
What is the CVSS score of CVE-2026-48864?
CVE-2026-48864 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-48864?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-48864, 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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