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Vulnerabilities

Vulnerability · USN-8936-1

php8.5, php8.3, php8.1, php7.4, php7.2, php7.0, php5 vulnerabilities

Published Oct 19, 2026 · catalog updated Oct 20, 2026 · php8.5, php8.3, php8.1, php7.4,

Open the advisory

Exploitation likelihood is not on this record for USN-8936-1. A missing EPSS score is not a low risk. Compare php8.5, php8.3, php8.1, php7.4, with the linked advisory before you change production.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (php8.5, php8.3, php8.1, php7.4,).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
  • EPSS is missing. A missing score is not a low risk.
Severity
Unknown—
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
Awaiting synchronization with FIRST
Remediation
Advisory link
Affected products
Ubuntu:22.04:LTS php8.1 · Ubuntu:24.04:LTS php8.3 · Ubuntu:26.04:LTS php8.5 · Ubuntu:26.10 php8.5 · Ubuntu:Pro:14.04:LTS php5 · Ubuntu:Pro:16.04:LTS php7.0

It was discovered that PHP did not properly validate the size of MySQL server packets in the mysqlnd driver. A malicious server could possibly use this issue to cause PHP to crash, resulting in a denial of service. This issue was only addressed in Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, Ubuntu 26.04 LTS, and Ubuntu 26.10. (CVE-2025-1218) It was discovered that PHP incorrectly handled response buffer sizes in the SOAP HTTP client. A malicious server could possibly use this issue to cause PHP to crash, resulting in a denial of service, or execute arbitrary code. (CVE-2025-14181) It was discovered that PHP incorrectly handled certain TAR archive headers in the Phar extension. An attacker could possibly use this issue to inject arbitrary files into a crafted archive. (CVE-2026-6103) It was discovered that PHP did not limit recursion depth when parsing certain SOAP requests. A remote attacker could possibly use this issue to cause PHP to crash, resulting in a denial of service. (CVE-2026-91765) It was discovered that PHP incorrectly handled authentication headers when following HTTP redirects. A remote attacker could possibly use this issue to obtain sensitive information. (CVE-2026-91766) It was discovered that PHP incorrectly handled wildcard names in TLS server certificates. A malicious server could possibly use this issue to cause PHP to crash, resulting in a denial of service. This issue did not affect Ubuntu 14.04 LTS. (CVE-2026-91767) It was discovered that PHP incorrectly validated IPv6 client addresses in the FastCGI client access check. A remote attacker could possibly use this issue to bypass access restrictions. This issue did not affect Ubuntu 14.04 LTS. (CVE-2026-91768) It was discovered that PHP incorrectly performed TLS peer name verification. A remote attacker could possibly use this issue to impersonate a trusted server. (CVE-2026-91769) It was discovered that PHP incorrectly handled certain stream filter options. An attacker could possibl

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Ubuntu:22.04:LTS php8.10 → 8.1.2-1ubuntu2.27
  • Ubuntu:24.04:LTS php8.30 → 8.3.6-0ubuntu0.24.04.12
  • Ubuntu:26.04:LTS php8.50 → 8.5.4-0ubuntu1.4
  • Ubuntu:26.10 php8.50 → 8.5.9-0ubuntu2
  • Ubuntu:Pro:14.04:LTS php50 → 5.5.9+dfsg-1ubuntu4.29+esm17
  • Ubuntu:Pro:16.04:LTS php7.00 → 7.0.33-0ubuntu0.16.04.16+esm21
  • Ubuntu:Pro:18.04:LTS php7.20 → 7.2.24-0ubuntu0.18.04.17+esm13
  • Ubuntu:Pro:20.04:LTS php7.40 → 7.4.3-4ubuntu2.29+esm4

How to fix USN-8936-1

  • Recommended remediation

    A patch or advisory reference is linked. Open the original publisher for availability by product version.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

Exploitation likelihood is not on this record for USN-8936-1. A missing EPSS score is not a low risk. Compare php8.5, php8.3, php8.1, php7.4, with the linked advisory before you change production.

Which versions are affected?

Compare what you have installed with 0 → 8.1.2-1ubuntu2.27, 0 → 8.3.6-0ubuntu0.24.04.12, 0 → 8.5.4-0ubuntu1.4, 0 → 8.5.9-0ubuntu2, 0 → 5.5.9+dfsg-1ubuntu4.29+esm17, 0 → 7.0.33-0ubuntu0.16.04.16+esm21. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS is not on this record yet. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Ubuntu security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 19, 2026 · OpenSSF OSV / OSV Scanner

    Detected

    It was discovered that PHP did not properly validate the size of MySQL server packets in the mysqlnd driver. A malicious server could possibly use this issue to cause PHP to crash, resulting in a denial of service. This issue was only addressed in Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, Ubuntu 26.04 LTS, and Ubuntu 26.10. (CVE-2025-1218) It was discovered that PHP incorrectly handled

  2. Oct 20, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    php5 fixed in 5.5.9+dfsg-1ubuntu4.29+esm17; php7.0 fixed in 7.0.33-0ubuntu0.16.04.16+esm21; php7.2 fixed in 7.2.24-0ubuntu0.18.04.17+esm13; php7.4 fixed in 7.4.3-4ubuntu2.29+esm4

  3. Oct 20, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    php5 fixed in 5.5.9+dfsg-1ubuntu4.29+esm17

  4. Oct 20, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    php7.0 fixed in 7.0.33-0ubuntu0.16.04.16+esm21

  5. Oct 20, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    php7.2 fixed in 7.2.24-0ubuntu0.18.04.17+esm13

  6. Oct 20, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    php7.4 fixed in 7.4.3-4ubuntu2.29+esm4

  7. Oct 20, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    php8.1 fixed in 8.1.2-1ubuntu2.27

  8. Oct 20, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    php8.3 fixed in 8.3.6-0ubuntu0.24.04.12

  9. Oct 20, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    php8.5 fixed in 8.5.9-0ubuntu2

  10. Oct 20, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    php8.5 fixed in 8.5.4-0ubuntu1.4

  11. Oct 20, 2026 · OpenSSF OSV / OSV Scanner

    Updated

    It was discovered that PHP did not properly validate the size of MySQL server packets in the mysqlnd driver. A malicious server could possibly use this issue to cause PHP to crash, resulting in a denial of service. This issue was only addressed in Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, Ubuntu 26.04 LTS, and Ubuntu 26.10. (CVE-2025-1218) It was discovered that PHP incorrectly handled

Sources

References

Freshness

Last verified in this catalog Oct 20, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.