CVE-2026-7261

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 78% 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
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 9.8Exploit: 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, when SoapServer is configured with SOAP_PERSISTENCE_SESSION, the handler object is persisted across requests via session storage. However, in the case SOAP requests results in an error, the persistance is handled incorrectly, resulting in freeing the object while keeping a pointer to it, which may lead to use-after-free. This may lead to memory corruption, information disclosure, or process crashes, with confidentiality, integrity, and availability impact on the vulnerable system.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
21.9%
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

SoapServer session-persisted object use-after-free via SOAP header fault · Advisory · php/php-src · GitHub

https://github.com/php/php-src/security/advisories/GHSA-m33r-qmcv-p97q

Vendor Advisories for CVE-2026-7261(3)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuphp8.5-zip (8.5.4-0ubuntu1.1) @ resolute2026-06-28ubuntu

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.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 10× in last 7d / 143× 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 246 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-7261?
CVE-2026-7261 is a critical 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, when SoapServer is configured with SOAPPERSISTENCESESSION, the handler object is persisted across requests via session storage. However, in the case SOAP requests results in an error, the persistance…
When was CVE-2026-7261 disclosed?
CVE-2026-7261 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-2026-7261 actively exploited?
CVE-2026-7261 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 21.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-7261?
CVE-2026-7261 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-7261?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-7261, 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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