CVE-2026-7258

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 74% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.5Exploit: NoneExposed: 0

A fix is available — apply it.

In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, some functions, including urldecode(), pass signed char to ctype functions (like isxdigit()). On the systems with default signed char and optimized table-lookup ctype functions - such as NetBSD - this can lead to accessing array with negative offset, which can trigger a denial of service.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
34(Track)
EG Risk 34/100SSVC: 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%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
26.1%
KEV
Not listed

Published

May 10, 2026

Last Modified

May 12, 2026

Advisory Details (1)

Auto-updated May 10, 2026
Patch available. Sources: github.
github Patch Available

Out-of-bounds read in urldecode() · Advisory · php/php-src · GitHub

https://github.com/php/php-src/security/advisories/GHSA-m8rr-4c36-8gq4

Vendor Advisories for CVE-2026-7258(9)

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

Patch Availability(6)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatphp-0:8.3.31-1.el10_22026-06-04redhat
redhatphp8.4-0:8.4.21-1.el10_22026-06-02redhat
redhatphp:8.2-8100020260521052503.f79986652026-06-01redhat
redhatphp:8.3-9080020260521113736.92026-06-01redhat
redhatphp:8.2-9080020260521080715.92026-06-01redhat
redhatphp-main-8.5.6-1.hum12026-05-06redhat

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 10× in last 7d / 45× 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 118 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-7258?
CVE-2026-7258 is a high vulnerability published on May 10, 2026. In PHP versions 8.2. before 8.2.31, 8.3. before 8.3.31, 8.4. before 8.4.21, and 8.5. before 8.5.6, some functions, including urldecode(), pass signed char to ctype functions (like isxdigit()). On the systems with default signed char and optimized table-lookup ctype functions - such as NetBSD - this…
When was CVE-2026-7258 disclosed?
CVE-2026-7258 was first published in the National Vulnerability Database on May 10, 2026, with the most recent update on May 12, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-7258 actively exploited?
CVE-2026-7258 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 26.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-7258?
CVE-2026-7258 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-7258?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-7258, 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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