CVE-2026-6722

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 0.9%, top 43% 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
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.3%CVSS: 9.8Exploit: None knownExposed services: Not assessed

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
9.8CRITICALmedium confidence
EG Risk
44
EG Risk 44/100

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%
Exploitation1% × 40%
Automatability0% × 15%
EPSS PROB
1.3%
EPSS %ILE
69th
KEV
Not listed

Published

May 10, 2026

Last Modified

July 24, 2026

Advisory Details (11)

Auto-updated Oct 9, 2026
Patch available. Sources: redhat, github.
redhatMentions a patch (unverified)

2468560 – (CVE-2026-6722) CVE-2026-6722 php: 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
redhatMentions a patch (unverified)

CVE-2026-6722 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-6722
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 8.

https://access.redhat.com/errata/RHSA-2026:34354
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 9.

https://access.redhat.com/errata/RHSA-2026:33449
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 10.

https://access.redhat.com/errata/RHSA-2026:23388
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 10.

https://access.redhat.com/errata/RHSA-2026:22649
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 8.

https://access.redhat.com/errata/RHSA-2026:22305
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 9.

https://access.redhat.com/errata/RHSA-2026:22143
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 9.

https://access.redhat.com/errata/RHSA-2026:22142
githubMentions a patch (unverified)

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
redhat

Affected: Red Hat Enterprise Linux 10",

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

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(9)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntuphp8.4-zip (8.4.11-1ubuntu1.2) @ questing2026-08-23ubuntu
ubuntuphp7.0-zip (7.0.33-0ubuntu0.16.04.16+esm19) @ xenial2026-08-23ubuntu
redhatphp:7.4-8100020260604072603.f79986652026-07-01redhat
redhatphp-0:8.0.30-6.el9_82026-06-30redhat
redhatphp-0:8.3.31-1.el10_22026-06-04redhat
redhatphp8.4-0:8.4.21-1.el10_22026-06-02redhat
redhatphp:8.3-9080020260521113736.92026-06-01redhat
redhatphp:8.2-9080020260521080715.92026-06-01redhat
redhatphp:8.2-8100020260521052503.f79986652026-06-01redhat

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 rangeFix by version rangeDependents
php7.47.4.21-1+deb11u1 ... 7.4.33-1+deb11u9 (14 versions)
  • every version up to 7.4.33-1+deb11u11: fixed in 7.4.33-1+deb11u11
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
php8.28.2.10-1 ... 8.2.7-1~deb12u1 (26 versions)
  • every version up to 8.2.31-1~deb12u1: fixed in 8.2.31-1~deb12u1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
php8.48.4.11-1, 8.4.16-1, 8.4.16-1~deb13u1, 8.4.20-1
  • every version up to 8.4.21-1~deb13u1: fixed in 8.4.21-1~deb13u1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
php8.48.4.11-1, 8.4.16-1, 8.4.16-1~deb13u1, 8.4.20-1, 8.4.21-1~deb13u1
  • every version up to 8.4.21-1: fixed in 8.4.21-1
—

Weakness Classification(2)

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

Additional Vendor Advisories

(2)

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 7× in last 7d / 23× 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 305 total refreshes for this CVE.

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

Related CVEs(same product + same vendor + same CWE)

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 on May 10, 2026, with the most recent update on July 24, 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 1.3% probability of exploitation in the next 30 days (69th percentile of EPSS-scored CVEs).
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?
A fix for CVE-2026-6722 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-6722 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-6722

Explore →

Is Your Infrastructure Affected by CVE-2026-6722?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs