DSA-6406-1 php8.4 - security update
Multiple security issues were found in PHP, a widely-used open source general purpose scripting language, which could result in denial of service, SQL injection, information disclosure or the execution of arbitrary code. https://security-tracker.debian.org/tracker/DSA-6406-1
Details
Original advisory: https://lists.debian.org/debian-security-announce/2026/msg00317.html
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-72600.17% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 6% of all scored CVEs.
- Low exploitation riskCVE-2026-175430.39% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 31% of all scored CVEs.
- Low exploitation riskCVE-2026-175440.43% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 35% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-7260 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-17543 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-17544 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- high[NEU] [hoch] PHP: Mehrere Schwachstellencert-bund
- unknownMultiples vulnérabilités dans PHP (31 juillet 2026)cert-fr-avis
- unknownCVE-2026-7260: Circular symbolic links in phar archives could lead to unbounded recursion, exhausting the C st…nvd
- unknownCVE-2026-17544: Attacker-provided inputs to bccomp() could lead to an out-of-bounds write with stack and heap …nvd
- unknownCVE-2026-17543: Improper escaping of backslashes in attacker-provided parameters would allow for trivial SQL i…nvd
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