What is CVE-2017-5630?

CVE-2017-5630 is a high-severity vulnerability in PHP Pear, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 7.5/10. Published 2017-02-01.

How severe is CVE-2017-5630?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in PHP Pear

CVE-2017-5630

PECL in the download utility class in the Installer in PEAR Base System v1.10.1 does not validate file types and filenames after a redirect, which allows remote HTTP servers to overwrite files via crafted responses, as demonstrated by a .htaccess overwrite.

Published 2017-02-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.125 (96.1th percentile), scored 2026-09-28.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 96.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.125 · newest: 0.125 · change: 0.000

Affected products

PHP Pear — versions 1.10.1

Weakness classification (CWE)

CWE-74 — Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection)

References

www.exploit-db.com/exploits/41185/ (VDB Entry, Third Party Advisory, exploit)
www.securityfocus.com/bid/95882 (VDB Entry, Third Party Advisory, vdb-entry)
pear.php.net/bugs/bug.php (Vendor Advisory)

Frequently asked questions

What is CVE-2017-5630?: CVE-2017-5630 is a high-severity vulnerability in PHP Pear, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 7.5/10. Published 2017-02-01.
How severe is CVE-2017-5630?: High severity. CVSS v3 base score is 7.5 out of 10.