CVE-2026-15028

LOWPre-NVD 3.93.9—
EchelonGraph scoreMEDIUM confidence

Score 3.9 from GitHub Security Advisory (severity: LOW) published 2026-07-10. a secondary CVSS source baseline 3.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
3.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 3.9Exploit: None knownExposed: 0

A fix is available — apply it.

A flaw was found in libarchive. This vulnerability allows a remote attacker to trigger a heap overflow by providing a specially crafted tar archive. The issue occurs during the parsing of a PAX extended header containing a malformed SUN.holesdata sparse-file attribute. Successful exploitation could lead to a denial of service, making the system unavailable, or potentially allow for arbitrary code execution, giving the attacker control over the affected system.

CVSS v3
3.9
EG Score
3.9(medium)
EG Risk
18(Track)
EG Risk 18/100SSVC: 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
Severity39% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
21%
KEV
Not listed

Published

July 10, 2026

Last Modified

August 21, 2026

References (5)

Vendor Advisories for CVE-2026-15028(3)

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

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibarchive13t64 (3.8.5-1ubuntu2.2) @ resolute2026-08-27ubuntu
redhatlibarchive-main-3.8.8-2.1.hum12026-07-12redhat

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
libarchive3.4.3-2 ... 3.8.9-1 (25 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
libarchive3.6.2-1 ... 3.8.9-1 (22 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
libarchive3.7.4-4 ... 3.8.9-1 (9 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
libarchive3.7.4-4 ... 3.8.8-2 (7 versions)3.8.9-1—

Weakness Classification(2)

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

Additional Vendor Advisories

(1)

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 11× in last 7d / 69× 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 103 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-15028?
CVE-2026-15028 is a low vulnerability published on July 10, 2026. A flaw was found in libarchive. This vulnerability allows a remote attacker to trigger a heap overflow by providing a specially crafted tar archive. The issue occurs during the parsing of a PAX extended header containing a malformed SUN.holesdata sparse-file attribute. Successful exploitation could…
When was CVE-2026-15028 disclosed?
CVE-2026-15028 was first published in the National Vulnerability Database on July 10, 2026, with the most recent update on August 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-15028 actively exploited?
CVE-2026-15028 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 79.4% of all scored CVEs.
What is the CVSS score of CVE-2026-15028?
CVE-2026-15028 has a CVSS v3 base score of 3.9 (NVD).
How do I remediate CVE-2026-15028?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-15028, 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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