CVE-2026-7568Signed integer overflow in metaphone()
Updated under an hour ago ()
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It affects PHP Group PHP and 3 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
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 metaphone() function in ext/standard/metaphone.c uses a signed int variable to track the current position within the input string. If a string longer than 2,147,483,647 bytes is passed, a signed integer overflow occurs, resulting in undefined behavior. This can lead to an out-of-bounds read, causing a segmentation fault or access to unrelated memory, and may affect the availability of the PHP process.
- CVSS
- 6.3 MEDIUM (v4.0, CNA)CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/RE:L/U:Amber
- Weakness (CWE)
- CWE-190, CWE-125
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- php
- NVD analysis
- Modified
- Record last updated
- Jul 14, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
PHP Group PHP php_group:php (from the name) | from 8.2.* before 8.2.31; from 8.3.* before 8.3.31; from 8.4.* before 8.4.21; from 8.5.* before 8.5.6 | CNA record |
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux | from 0:8.4.21-1.el10_2 not affected | CISA ADP |
Red Hat Red Hat Hardened Images redhat:hummingbird | 1 | CISA ADP |
php php php:php | from 8.2.0 before 8.2.31; from 8.3.0 before 8.3.31; from 8.4.0 before 8.4.21; from 8.5.0 before 8.5.6 | NVD |
References
- https://github.com/php/php-src/security/advisories/GHSA-96wq-48vp-hh57vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:22142
- https://access.redhat.com/errata/RHSA-2026:22143
- https://access.redhat.com/errata/RHSA-2026:22305
- https://access.redhat.com/errata/RHSA-2026:22649
- https://access.redhat.com/errata/RHSA-2026:23388
- https://access.redhat.com/errata/RHSA-2026:33449
- https://access.redhat.com/errata/RHSA-2026:34354
- https://access.redhat.com/security/cve/CVE-2026-7568
- https://bugzilla.redhat.com/show_bug.cgi?id=2468566
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-7568.json
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.