CVE-2026-6722

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 0.5%, top 61% 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: 1%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, the SOAP extension's object deduplication mechanism stores pointers to PHP objects in a global map without incrementing their reference counts. When an apache:Map node contains duplicate keys, processing the second entry overwrites the first in the temporary result map, freeing the original PHP object while its stale pointer remains in the map. A subsequent href reference to the freed node can copy the dangling pointer into the result. As PHP string allocations can reclaim the freed memory region, an attacker with control over the SOAP request body can exploit this use-after-free to achieve remote code execution.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
—
EPSS
50.7%
KEV
Not listed

Published

May 10, 2026

Last Modified

July 22, 2026

Advisory Details (6)

Auto-updated Jul 16, 2026
Patch available. Sources: github, redhat.
redhat

Affected: Red Hat Enterprise Linux 10",

https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-6722.json
redhat Patch Available

2468560 – (CVE-2026-6722) CVE-2026-6722 php: php-soap: php-src: PHP SOAP extension: Remote Code Execution via use-after-free vulnerability

Affected: Red Hat Enterprise Linux 9

https://bugzilla.redhat.com/show_bug.cgi?id=2468560
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-6722
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.

https://access.redhat.com/errata/RHSA-2026:34354
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.

https://access.redhat.com/errata/RHSA-2026:33449
github Patch Available

Use-After-Free in SOAP using Apache map with Remote Code Execution · Advisory · php/php-src · GitHub

https://github.com/php/php-src/security/advisories/GHSA-85c2-q967-79q5

Vendor Advisories for CVE-2026-6722(8)

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
ubuntuphp8.1-zip (8.1.2-1ubuntu2.24) @ jammy2026-06-28ubuntu

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(2)

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 9× in last 7d / 48× 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 166 total refreshes for this CVE.

  1. 2026-07-22 14:08 UTCEPSS rescore
  2. 2026-07-22 14:08 UTCEPSS rescore
  3. 2026-07-21 15:25 UTCEPSS rescore
  4. 2026-07-21 15:25 UTCEPSS rescore
  5. 2026-07-20 17:08 UTCEPSS rescore
  6. 2026-07-19 14:31 UTCEPSS rescore
  7. 2026-07-19 02:29 UTCEPSS rescore
  8. 2026-07-18 10:04 UTCEPSS rescore
  9. 2026-07-16 17:03 UTCEPSS rescore
  10. 2026-07-15 16:57 UTCEPSS rescore
  11. 2026-07-15 02:00 UTCEPSS rescore
  12. 2026-07-15 01:23 UTCNVD updateCVSS v3 → 9.8 · severity → CRITICAL
  13. 2026-07-15 00:50 UTCMITRE cvelistV5CVSS v3 → 7.7 · severity → HIGH
  14. 2026-07-13 22:31 UTCEPSS rescore
  15. 2026-07-13 06:13 UTCEPSS rescore
  16. 2026-07-13 06:13 UTCEPSS rescore
  17. 2026-07-12 05:46 UTCEPSS rescore
  18. 2026-07-11 08:27 UTCEPSS rescore
  19. 2026-07-11 08:27 UTCEPSS rescore
  20. 2026-07-09 19:10 UTCEPSS rescore
  21. 2026-07-09 19:10 UTCEPSS rescore
  22. 2026-07-08 15:16 UTCEPSS rescore
  23. 2026-07-08 15:16 UTCEPSS rescore
  24. 2026-07-07 13:46 UTCEPSS rescore
  25. 2026-07-07 13:46 UTCEPSS rescore
Show 75 more
  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 UTCVendor advisory
  14. 2026-06-28 04:56 UTCEPSS rescore
  15. 2026-06-27 14:42 UTCVendor advisory
  16. 2026-06-27 10:25 UTCVendor advisory
  17. 2026-06-27 03:08 UTCEPSS rescore
  18. 2026-06-26 21:10 UTCVendor advisory
  19. 2026-06-26 05:41 UTCVendor advisory
  20. 2026-06-25 13:50 UTCEPSS rescore
  21. 2026-06-24 14:05 UTCEPSS rescore
  22. 2026-06-23 21:33 UTCEPSS rescore
  23. 2026-06-23 21:33 UTCEPSS rescore
  24. 2026-06-22 14:25 UTCEPSS rescore
  25. 2026-06-22 14:25 UTCEPSS rescore
  26. 2026-06-21 14:56 UTCEPSS rescore
  27. 2026-06-21 14:56 UTCEPSS rescore
  28. 2026-06-21 01:59 UTCEPSS rescore
  29. 2026-06-21 01:59 UTCEPSS rescore
  30. 2026-06-19 19:26 UTCEPSS rescore
  31. 2026-06-19 19:26 UTCEPSS rescore
  32. 2026-06-18 17:52 UTCEPSS rescore
  33. 2026-06-18 17:52 UTCEPSS rescore
  34. 2026-06-17 17:53 UTCEPSS rescore
  35. 2026-06-17 05:39 UTCVendor advisory
  36. 2026-06-17 01:12 UTCVendor advisory
  37. 2026-06-16 17:53 UTCEPSS rescore
  38. 2026-06-16 07:49 UTCVendor advisory
  39. 2026-06-15 17:49 UTCEPSS rescore
  40. 2026-06-15 17:49 UTCEPSS rescore
  41. 2026-06-15 04:30 UTCVendor advisory
  42. 2026-06-15 00:13 UTCVendor advisory
  43. 2026-06-14 23:18 UTCEPSS rescore
  44. 2026-06-14 19:41 UTCVendor advisory
  45. 2026-06-14 15:23 UTCVendor advisory
  46. 2026-06-14 11:01 UTCVendor advisory
  47. 2026-06-14 06:44 UTCVendor advisory
  48. 2026-06-14 02:15 UTCVendor advisory
  49. 2026-06-13 23:00 UTCEPSS rescore
  50. 2026-06-13 08:58 UTCVendor advisory
  51. 2026-06-12 23:12 UTCEPSS rescore
  52. 2026-06-12 23:12 UTCEPSS rescore
  53. 2026-06-12 22:47 UTCVendor advisory
  54. 2026-06-12 18:30 UTCVendor advisory
  55. 2026-06-12 10:34 UTCVendor advisory
  56. 2026-06-12 06:18 UTCVendor advisory
  57. 2026-06-12 02:02 UTCVendor advisory
  58. 2026-06-11 21:45 UTCVendor advisory
  59. 2026-06-11 17:29 UTCVendor advisory
  60. 2026-06-11 14:00 UTCEPSS rescore
  61. 2026-06-11 13:13 UTCVendor advisory
  62. 2026-06-11 08:56 UTCVendor advisory
  63. 2026-06-11 04:41 UTCVendor advisory
  64. 2026-06-11 00:24 UTCVendor advisory
  65. 2026-06-10 22:19 UTCEPSS rescore
  66. 2026-06-10 20:08 UTCVendor advisory
  67. 2026-06-10 15:52 UTCVendor advisory
  68. 2026-06-10 13:22 UTCEPSS rescore
  69. 2026-06-10 11:36 UTCVendor advisory
  70. 2026-06-10 02:55 UTCVendor advisory
  71. 2026-06-09 22:39 UTCVendor advisory
  72. 2026-06-09 18:04 UTCVendor advisory
  73. 2026-06-09 13:48 UTCVendor advisory
  74. 2026-06-09 09:32 UTCVendor advisory
  75. 2026-06-09 05:05 UTCVendor advisory

Frequently asked(5)

What is CVE-2026-6722?
CVE-2026-6722 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, the SOAP extension's object deduplication mechanism stores pointers to PHP objects in a global map without incrementing their reference counts. When an apache:Map node contains duplicate keys,…
When was CVE-2026-6722 disclosed?
CVE-2026-6722 was first published in the National Vulnerability Database on May 10, 2026, with the most recent update on July 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-6722 actively exploited?
CVE-2026-6722 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 50.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-6722?
CVE-2026-6722 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-6722?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-6722, 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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