CVE-2026-58025

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory published 2026-07-01. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this weekElevated
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: Elevated riskExposed: 0

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

Deserialization of untrusted data vulnerability in Wikimedia Foundation MediaWiki.

This vulnerability is associated with program files includes/Import/WikiImporter.Php, includes/Import/WikiRevision.Php, includes/Logging/LogEntryBase.Php.

This issue affects MediaWiki: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
65(Track*)
EG Risk 65/100SSVC: 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
Severity98% × 45%
Exploitation40% × 40%
Automatability30% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
1%
EPSS %ILE
41%
KEV
Not listed

Published

July 1, 2026

Last Modified

July 9, 2026

Advisory Details (1)

Auto-updated Aug 22, 2026
No patch confirmed yet.
generic

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https://phabricator.wikimedia.org/T422244

Vendor Advisories for CVE-2026-58025(1)

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
mediawiki1:1.35.11-1~deb11u1 ... 1:1.43.9+dfsg-1~deb13u1 (56 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
mediawiki1:1.39.10-1 ... 1:1.43.9+dfsg-1~deb13u1 (30 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
mediawiki1:1.43.3+dfsg-1 ... 1:1.43.8+dfsg-2 (8 versions)1:1.43.9+dfsg-1~deb13u1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
mediawiki1:1.43.3+dfsg-1 ... 1:1.43.9+dfsg-1~deb13u1 (9 versions)1:1.43.9+dfsg-1—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 29× in last 7d / 192× 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 314 total refreshes for this CVE.

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

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCshinthink/CVE-2026-58025
    First seen Jul 29, 2026

    CVE-2026-58025 — MediaWiki Deserialization RCE via Log Entry Import. LogEntryBase::extractParams() unserialize() user-controlled log_params. CVSS 9.8 | CWE-502 | MediaWiki < 1.43.9, < 1.44.6, < 1.45.4, < 1.46.0

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-58025?
CVE-2026-58025 is a critical vulnerability published on July 1, 2026. Deserialization of untrusted data vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Import/WikiImporter.Php, includes/Import/WikiRevision.Php, includes/Logging/LogEntryBase.Php. This issue affects MediaWiki: from * before 1.46.0, 1.45.4,…
When was CVE-2026-58025 disclosed?
CVE-2026-58025 was first published in the National Vulnerability Database on July 1, 2026, with the most recent update on July 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-58025 actively exploited?
CVE-2026-58025 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 59.2% of all scored CVEs.
What is the CVSS score of CVE-2026-58025?
CVE-2026-58025 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-58025?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-58025, 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-2026-58025

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