CVEvulnerability

CVE-2021-21707

5.3 MEDIUM Published 2021-11-29 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-11-29
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS 3.1 ([email protected])
5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:P/I:N/A:N
Weaknesses
CWE-159

Description

In PHP versions 7.3.x below 7.3.33, 7.4.x below 7.4.26 and 8.0.x below 8.0.13, certain XML parsing functions, like simplexml_load_file(), URL-decode the filename passed to them. If that filename contains URL-encoded NUL character, this may cause the function to interpret this as the end of the filename, thus interpreting the filename differently from what the user intended, which may lead it to reading a different file than intended.

Affected configurations

• php php (>= 7.3.0 < 7.3.33) • php php (>= 7.4.0 < 7.4.26) • php php (>= 8.0.0 < 8.0.13) • netapp clustered data ontap • debian debian linux 10.0 • debian debian linux 11.0 • tenable tenable.sc (< 5.21.0)

Related

Weakness · CWE (1)

  • CWE-159 Improper Handling of Invalid Use of Special Elements weakness

References