CVE-2026-93682: PHP · Out-of-bounds Read
Affects PHPSource CVE Database V5
Not known to be exploited · CVSS 5.8 Medium · fixed in 8.5.11 : update PHP when convenient.
Data as of 8 Nov 2026, 23:24 UTC
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 27% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 8.5.11, 8.4.26, 8.3.35 +1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:NExploitation evidence
Disclosed: evidence found.
CVE published 25 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 8 Nov 2026.
What to do
Upgrade PHP to 8.5.11, 8.4.26, 8.3.35 or 8.2.34.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| PHP GroupPHP | Affected
| Fixed in
|
| PHP GroupPHP | Affected
| Fixed in
|
| PHP GroupPHP | Affected
| Fixed in
|
| PHP GroupPHP | Affected
| Fixed in
|
AI-suggested
If you cannot patch yet, users should be cautious when handling redirects from untrusted servers. No vendor advisory states that no action is required or that the issue is already mitigated.
Description
CVE-2026-93682 is an out-of-bounds read vulnerability in the PHP HTTP stream wrapper. When following a redirect, if the Location header is empty, the code reads one byte beyond the allocated buffer. This byte influences the redirect target, allowing a malicious server to control whether the client is redirected to the host root or the current directory. The vulnerability has a medium severity with a CVSS score of 5.8.