Unspecified vulnerability in the session extension functionality in PHP before 5.1.3 has unknown impact and attack vectors related to heap c
Unspecified vulnerability in the session extension functionality in PHP before 5.1.3 has unknown impact and attack vectors related to heap corruption.
- Published
- Jun 14, 2006
- Updated
- Jun 16, 2026
- EPSS
- 2.0% · 80th percentile
- CWE
- —
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Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 30 / 40 · 7.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 2.0%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| php group | php | cpe:2.3:a:php_group:php |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- php group phpup to 5.1.2 inclusive
Same product
php group: all recordsOther highest-scoring records for the same primary product.
- CVE-2006-3016Unspecified vulnerability in session.c in PHP before 5.1.3 has unknown impact and attack vectors, related to "certain characters in session 38Monitor
- CVE-2024-2756__Host-/__Secure- cookie bypass due to partial CVE-2022-31629 fix37Monitor
- CVE-2026-91765SOAP: Unbounded Recursion in Server-Side cleanup_xml_node30Monitor
- CVE-2026-17545PHP on Windows: Reserved Device Names Are Not Rejected Before File/Stream I/O which can cause DoS27Monitor
- CVE-2026-91768IPv6 ACL bypass in FastCGI listen.allowed_clients due to partial address comparison (memcmp 12 bytes)26Monitor
- CVE-2026-91767Heap-buffer-overflow in php_openssl_matches_wildcard_name on crafted server cert wildcard CN26Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- P · data can be read
- Integrity
- P · data or configuration can be modified
- Availability
- P · the service can be disrupted
- Attack complexity
- Low
- Confidentiality impact
- P
- Integrity impact
- P
- Availability impact
- P
Weakness class (CWE)
—
CVSS vector
AV:N/AC:L/Au:N/C:P/I:P/A:P
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
- secunia.com/advisories/19927
- secunia.com/advisories/21050
- secunia.com/advisories/21125
- securitytracker.com/id?1016306
- www.mandriva.com/security/advisories?name=MDKSA-2006:122
- www.osvdb.org/25254
- www.php.net/release_5_1_3.php
- www.securityfocus.com/bid/17843
- www.ubuntu.com/usn/usn-320-1
Vendor advisories and official records. Exploit/PoC links are deliberately left out.