CVE-2016-9263: wordpress Improper Input Validation
CVSS: 4.7v3.0MediumModified
AliasesDEBIAN-CVE-2016-9263
Published 12-10-2017Last modified 06-08-2024
Vulnerability summary
CVE-2016-9263 is a medium (CVSS 4.7) Improper Input Validation vulnerability in wordpress. EPSS estimates a 2.17% chance of exploitation in the next 30 days, higher than 82% of scored vulnerabilities. Fixed in 3.7.25.
CVSS score
4.7/10
010
Medium · v3.0 (NVD)EPSS score
2.17%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 1Timeline
- 12-10-2017PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
WordPress through 4.8.2, when domain-based flashmediaelement.swf sandboxing is not used, allows remote attackers to conduct cross-domain Flash injection (XSF) attacks by leveraging code contained within the wp-includes/js/mediaelement/flashmediaelement.swf file.
CVSS metrics
4 scores · 3 sources · 3 versionsMedium 4.7Preferred score · wordfence (Source)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:NSourcesSingle source
Medium 4.7Preferred score · NVD (NIST)
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:NSourcesAll 2 agree
- OSV · DebianEcosystem advisory · calculated4.7MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
Low 2.6Preferred score · NVD (NIST)
AV:N/AC:H/Au:N/C:N/I:P/A:NSourcesSingle source
EPSS trend
Probability
2.17%
Chance of exploitation in the next 30 days
Percentile
82%
Versus all other CVEs
30-day change
0.00 pp
From 2.17% on 19-09-2026
19-09-202619-10-2026
EPSS score2.17%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Wordpress2 products
- wordpress< 3.7 (fixed in 3.7.25) | ≥ 3.7, ≤ 3.7.24 (fixed in 3.7.25) | ≥ 3.8, ≤ 3.8.24 (fixed in 3.7.25) | ≥ 3.9, ≤ 3.9.23 (fixed in 3.7.25) | ≥ 4.0, ≤ 4.0.21 (fixed in 3.7.25) | ≥ 4.1, ≤ 4.1.21 (fixed in 3.7.25) | ≥ 4.2, ≤ 4.2.18 (fixed in 3.7.25) | ≥ 4.3, ≤ 4.3.14 (fixed in 3.7.25) | ≥ 4.4, ≤ 4.4.13 (fixed in 3.7.25) | ≥ 4.5, ≤ 4.5.12 (fixed in 3.7.25) | ≥ 4.6, ≤ 4.6.9 (fixed in 3.7.25) | ≥ 4.7, ≤ 4.7.8 (fixed in 3.7.25) | ≥ 4.8, ≤ 4.8.4 (fixed in 3.7.25) | ≥ 4.9, ≤ 4.9.1 (fixed in 3.7.25)
- wordpress≤ 4.8.2
Debian1 product
- wordpress< 4.1+dfsg-1
2 vendors · 3 products
References
4 links- opnsec.com/2017/10/cve-2016-9263-unpatched-xsf-vulnerability-in-wordpress/X Refsource MISCMitigationThird Party Advisory