CVE-2021-32924

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 19.9%, top 3% 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
Elevated
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 20%CVSS: 8.8Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Invision Community (aka IPS Community Suite) before 4.6.0 allows eval-based PHP code injection by a moderator because the IPS\cms\modules\front\pages\_builder::previewBlock method interacts unsafely with the IPS\_Theme::runProcessFunction method.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
60(Track)
EG Risk 60/100SSVC: 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 computed
Severity88% × 45%
Exploitation40% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
20%
EPSS %ILE
97%
KEV
Not listed

Published

June 1, 2021

Last Modified

November 21, 2024

Advisory Details (3)

Auto-updated Aug 24, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

HackerOne

https://hackerone.com/reports/1092574
generic🟡 PoC Available

Full Disclosure: [KIS-2021-04] IPS Community Suite <= 4.5.4.2 (previewBlock) PHP Code Injection Vulnerability

http://seclists.org/fulldisclosure/2021/May/80
generic

IPS Community Suite <= 4.5.4.2 (previewBlock) PHP Code Injection Vulnerability | Karma(In)Security

http://karmainsecurity.com/KIS-2021-04

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 29× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 153 total refreshes for this CVE.

  1. 2026-09-24 14:00 UTCEPSS rescore
  2. 2026-09-23 13:44 UTCEPSS rescore
  3. 2026-09-22 14:44 UTCEPSS rescore
  4. 2026-09-21 20:28 UTCEPSS rescore
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  1. 2026-08-30 01:19 UTCEPSS rescore
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  25. 2026-08-05 19:14 UTCEPSS rescore
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  27. 2026-08-03 10:33 UTCEPSS rescore
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  39. 2026-07-23 02:01 UTCEG score recompute
  40. 2026-07-22 22:48 UTCEG score recompute
  41. 2026-07-22 14:06 UTCEPSS rescore
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  43. 2026-07-21 15:22 UTCEPSS rescore
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  45. 2026-07-20 17:05 UTCEPSS rescore
  46. 2026-07-19 02:27 UTCEPSS rescore
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  49. 2026-07-16 17:00 UTCEPSS rescore
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  52. 2026-07-13 22:27 UTCEPSS rescore
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  57. 2026-07-09 19:07 UTCEPSS rescore
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  69. 2026-06-28 14:05 UTCEPSS rescore
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  72. 2026-06-27 03:06 UTCEPSS rescore
  73. 2026-06-25 13:48 UTCEPSS rescore
  74. 2026-06-25 13:48 UTCEPSS rescore
  75. 2026-06-24 14:03 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2021-32924?
CVE-2021-32924 is a high vulnerability published on June 1, 2021. Invision Community (aka IPS Community Suite) before 4.6.0 allows eval-based PHP code injection by a moderator because the IPS\cms\modules\front\pages\builder::previewBlock method interacts unsafely with the IPS\Theme::runProcessFunction method.
When was CVE-2021-32924 disclosed?
CVE-2021-32924 was first published in the National Vulnerability Database on June 1, 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-2021-32924 actively exploited?
CVE-2021-32924 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 20% probability of exploitation in the next 30 days, which ranks it in the top 2.7% of all scored CVEs.
What is the CVSS score of CVE-2021-32924?
CVE-2021-32924 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2021-32924?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-32924, 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.

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