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 — 4 sources updated 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
14%
KEV
Not listed

Published

May 26, 2026

Last Modified

September 17, 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(20)

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

Patch Availability(24)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatrhcos-412.86.202608241157-02026-09-03redhat
redhatrhcos-417.94.202608250221-02026-09-03redhat
redhatrhcos-414.92.202608172040-02026-08-31redhat
redhatrhcos-416.94.202608150307-02026-08-31redhat
redhatrhcos-415.92.202608180329-02026-08-31redhat
redhatrhcos-418.94.202608142238-02026-08-26redhat
redhatrhcos-4.19.9.6.202608182320-02026-08-26redhat
redhatrhui5/rhua-tp-rhel9:17872412602026-08-24redhat
redhatinsights-proxy/insights-proxy-container-rhel9:17864336562026-08-11redhat
redhatsatellite-capsule:el8/libsolv-1:0.7.20-7.el8sat2026-08-04redhat
redhatlibsolv-0:0.6.34-4.el7_9.12026-08-03redhat
redhatlibsolv-0:0.7.29-8.el10_0.12026-07-31redhat
redhatlibsolv-0:0.7.20-4.el8_8.12026-07-31redhat
redhatlibsolv-0:0.7.22-4.el9_2.12026-07-31redhat
redhatlibsolv-0:0.7.24-3.el9_6.12026-07-31redhat
redhatlibsolv-0:0.7.20-1.el8_6.12026-07-31redhat
redhatlibsolv-0:0.7.24-2.el9_4.12026-07-31redhat
redhatlibsolv-0:0.7.16-3.el8_4.12026-07-31redhat
redhatdiscovery/discovery-ui-rhel9:17848217502026-07-27redhat
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.

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 ... 0.7.39-1 (6 versions)——

Weakness Classification(1)

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

Additional Vendor Advisories

(5)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 10× in last 7d / 98× 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 395 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

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 September 17, 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 86.3% 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.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-48864

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