01 Record
CVE-2021-34637
Post Index <= 0.7.5 Cross-Site Request Forgery to Stored Cross-Site Scripting
HighPUBLISHEDCNA: Wordfence
CNA base score8.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
02 Description
Post Index <= 0.7.5 Cross-Site Request Forgery to Stored Cross-Site Scripting
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 0.70% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 52.6% of scored records. A rank, not a probability.
- NVD base score
- 8.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2021-08-02 20:39Z5 YR AGO
- Last updated
- 2024-09-17 03:32Z2 YR AGO
- Reserved
- 2021-06-10
- Assigning CNA
- Wordfence
- Record state
- PUBLISHED
- Severity
- High (CVSS 8.8)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-352Cross-Site Request Forgery (CSRF)Compound
- Data version
- 5.1
- Document digest
- 20b4605d284d9058670999ee29e34b1ca0944d2be22cbe5f1ee3649b4b48120b
05 Affected products
VendorProductVersionsPlatforms
06 References
- www.wordfence.comhttps://www.wordfence.com/vulnerability-advisories/#CVE-2021-34637
- plugins.trac.wordpress.orghttps://plugins.trac.wordpress.org/browser/post-index/trunk/php/settings.php#L86
07 Remediation
Uninstall plugin from WordPress site.