CVE-2026-16979: unknown smartcrawl seo checker, analyzer & optimizer
Vulnerability summary
CVE-2026-16979 is a medium (CVSS 4.3) vulnerability in unknown smartcrawl seo checker, analyzer & optimizer. EPSS estimates a 0.27% chance of exploitation in the next 30 days, higher than 18% of scored vulnerabilities. 1 public exploit is recorded. Fixed in 3.16.3.
Timeline
- 19-08-2026PublishedVulnerability first disclosed.
- 19-08-2026Last modifiedVulnerability information updated.
Description
The SmartCrawl SEO checker, analyzer & optimizer WordPress plugin before 3.16.3 does not perform capability checks on two of its AJAX actions, allowing users with at least the Subscriber role to read the titles of private and draft posts by ID and to enumerate stored post-meta key names.
CVSS metrics
3 scores · 3 sources · 1 version- NVDNIST4.3MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- wordfenceSource4.3MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
EPSS trend
Probability
0.27%
Chance of exploitation in the next 30 days
Percentile
18%
Versus all other CVEs
30-day change
+0.07 pp
From 0.20% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (wpscan.com)
Maturity: unknown
Weaknesses
CWE · root cause- CWE-639Authorization Bypass Through User-Controlled KeyThe system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.
- CWE-862Missing AuthorizationThe product does not perform an authorization check when an actor attempts to access a resource or perform an action.
Affected systems
Unknown1 product
Wordpress1 product
- smartcrawl-seo< 3.16.3
2 vendors · 2 products