The Imagements WordPress plugin through 1.2.5 allows images to be uploaded in comments, however only checks for the Content-Type in the request to forbid dangerous files. This allows unauthenticated attackers to upload arbitrary files by using a valid image Content-Type along with a PHP filename and code, leading to RCE.
CVE-2021-24236
CRITICALNVD 9.89.8—Elevated
EchelonGraph scoreMEDIUM confidence
This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 7.1%, top 6% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: epss, nvd
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 7%CVSS: 9.8Exploit: Elevated riskExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 9.8
- EG Score
- 9.8(medium)
- EG Risk
- 65(Track*)EG Risk 65/100SSVC: Track*
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity98% × 45%Exploitation40% × 40%Automatability30% × 15%Action: Watch closely — could escalate to Attend. - EPSS PROB
- 7%
- EPSS %ILE
- 94%
- KEV
- Not listed
Published
May 6, 2021
Last Modified
November 21, 2024
References (2)
- contact@wpscanhttps://wpscan.com/vulnerability/8f24e74f-60e3-4100-9ab2-ec31b9c9cdea
- af854a3a-2127-422b-91ae-364da2661108https://wpscan.com/vulnerability/8f24e74f-60e3-4100-9ab2-ec31b9c9cdea
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Frequently asked(5)
What is CVE-2021-24236?
CVE-2021-24236 is a critical vulnerability published on May 6, 2021. The Imagements WordPress plugin through 1.2.5 allows images to be uploaded in comments, however only checks for the Content-Type in the request to forbid dangerous files. This allows unauthenticated attackers to upload arbitrary files by using a valid image Content-Type along with a PHP filename…
When was CVE-2021-24236 disclosed?
CVE-2021-24236 was first published in the National Vulnerability Database on May 6, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-24236 actively exploited?
CVE-2021-24236 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 7% probability of exploitation in the next 30 days, which ranks it in the top 6.0% of all scored CVEs.
What is the CVSS score of CVE-2021-24236?
CVE-2021-24236 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2021-24236?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-24236, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2021-24236
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