CVE-2026-109619PHP Use-After-Free
RCE via stale global state
Published Oct 21, 2026 · Updated Oct 22, 2026 · Also known as BIT-libphp-2026-109619, BIT-php-2026-109619, BIT-php-min-2026-109619, EUVD-2026-107265, GHSA-6wmf-4rv5-p3rp
Key Facts
Patch immediately- CVE-2026-109619 is a critical-severity vulnerability (CVSS 9.2 v4) affecting PHP, libphp (bitnami), php-min (bitnami) and 8 more products.
- It is exploited in the wild, listed in Industry KEV feed since Oct 21, 2026. No public exploit code is known.
- EPSS estimates a 5.8% probability of exploitation in the next 30 days.
- Fixed versions are available, including libphp 8.2.35, libphp 8.3.36, libphp 8.4.27.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Scores
CVSS v4
9.2
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS (30-day exploit likelihood)
5.8%
Higher than 93.0% of all scored CVEs
Exploit maturity
Exploited (KEV)
ATLAS score
79/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Oct 21, 2026
0 days after publication
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Exploited (KEV)
Public exploit code
10
Proof-of-concept links
In-the-wild evidence
8
Reports of active use
Advisories And Exploit References
- advisoryRHSA-2026:87070
- advisoryRHSA-2026:87071
- advisoryRHSA-2026:87072
- advisoryRHSA-2026:87073
- advisoryRHSA-2026:87079
- advisoryRHSA-2026:87080
Description
PHP has various global state that temporarily points into request memory. In some scenarios, global state may not be correctly reset, or may be repopulated after being reset. The global state may then refer to request memory even after it has been freed. Subsequent requests may read or branch on this stale state before it is fully initialized. Multiple strategies can trigger this condition and produce remote code execution (RCE).
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Oct 21, 2026 | n/a | Not reported |
Affected Products
19 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| PHPPHP | >= 8.5.* | 8.2.35 |
| libphpbitnami | See advisory | 8.2.35 |
| php-minbitnami | See advisory | 8.2.35 |
| php8.2debian | See advisory | 8.2.35-1~deb12u1 |
| php8.4debian | See advisory | 8.4.27-1 |
Patched Releases
libphp
8.2.35, 8.3.36, 8.4.27, 8.5.12
PHP
0:8.0.30-8.el9_8.1, 0:8.3.36-1.el10_2, 8.2.35, 8.3.36, 8.4.27, 8.5.12
php-main
8.5.12-1.hum1
php-min
8.2.35, 8.3.36, 8.4.27, 8.5.12
php-src
8.2.35, 8.3.36, 8.4.27, 8.5.12
php:7.4
8100020261021081045.f7998665
php:8.2
9080020261020145734.9
php:8.3
9080020261020115403.9
php8.2
8.2.35-1~deb12u1
php8.4
0:8.4.27-1.el10_2, 8.4.27-1, 8.4.27-1~deb13u1
Timeline
Publicly disclosed
Oct 21, 2026
Added to Industry KEV feed
Oct 21, 2026
Last updated
Oct 22, 2026
Weakness Type
- CWE-416 Use After Free
- CWE-755 Improper Handling of Exceptional Conditions
- CWE-824 Access of Uninitialized Pointer
- CWE-1325 Improperly Controlled Sequential Memory Allocation
- CWE-1419 Incorrect Initialization of Resource
References
- advisoryRHSA-2026:87070
- advisoryRHSA-2026:87071
- advisoryRHSA-2026:87072
- advisoryRHSA-2026:87073
- advisoryRHSA-2026:87079
FAQ
Common Questions.
PHP has various global state that temporarily points into request memory.
Affected: PHP versions >= 8.5.*; libphp (bitnami); php-min (bitnami), among others. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Oct 21, 2026.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including libphp 8.2.35, libphp 8.3.36, libphp 8.4.27.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Is CVE-2026-109619 On Your Attack Surface?
Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.
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