CVE-2017-9050

libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a heap-based buffer over-read in the xmlDictAddString function in dict.c. This vulnerability causes programs that use libxml2, such as PHP, to crash. This vulnerability exists because of an incomplete fix for CVE-2016-1839.

CVSS 3.1

7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

4.6% chance of exploitation in the next 30 days; higher than 91% of CVEs (scores of 2026-10-25)

CWEs

CWE-125, CWE-122

Published

2017-05-18

Modified

2026-10-14

Record from

the NVD, synced 2026-10-19

Affected

• xmlsoft:libxml2

Packages (OSV)

References

• http://www.debian.org/security/2017/dsa-3952
• http://www.openwall.com/lists/oss-security/2017/05/15/1
• http://www.securityfocus.com/bid/98568
• https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
• https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E

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