PatchTheCEVCVE-2026-7260: Circular symbolic links in phar archives could lead to unbounded recursion, exhausting the C stack and crashin
20
Routine
MEDIUM 5.5UPGRADE
CVE-2026-7260 is a medium-severity flaw (CVSS 5.5) affecting php. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Circular symbolic links in phar archives could lead to unbounded recursion, exhausting the C stack and crashing the PHP process, in PHP versions from 8.2.* before 8.2.33, from 8.3.* before 8.3.33, from 8.4.* before 8.4.24, and from 8.5.* before 8.5.9.
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 5.5 (Medium) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | 0.1% (top 99%) |
| CISA exploited list | No |
| Weakness | CWE-121 |
| Published | 2026-07-30 |
| Last modified | 2026-10-23 |
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
php php UPGRADE
Affected: >= 8.2.0 and < 8.2.33 · >= 8.3.0 and < 8.3.33 · >= 8.4.0 and < 8.4.24 · >= 8.5.0 and < 8.5.9
Fixed in: 8.2.33, 8.3.33, 8.4.24, 8.5.9
Safe to downgrade to: a release before 8.2.0
1. Check installed version
apt-cache policy php || rpm -q php || php --version
2. UPGRADE to 8.2.33 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade php
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade php
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
3. If no update is available yet, DOWNGRADE to a release before 8.2.0 (Debian / Ubuntu)
apt-cache madison php
sudo apt install php=<VERSION_BEFORE_8.2.0>
sudo apt-mark hold php
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list php
sudo dnf downgrade php-<VERSION_BEFORE_8.2.0>
sudo dnf versionlock add php
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
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