CVE-2024-22393 | Apache Answer: Pixel Flood Attack by uploading the large pixel file

Unrestricted Upload of File with Dangerous Type vulnerability in Apache Answer.This issue affects Apache Answer: through 1.2.1. Pixel Flood Attack by uploading large pixel files will cause server out of memory. A logged-in user can cause such an attack by uploading an image when posting content. Users are recommended to upgrade to version [1.2.5], which fixes the issue.

Published: 2024-02-22 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2024-22393 is rated Moderate Risk (60.3/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 2.48%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2024-22393

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 26.73% 2.48% -24.25%
2 2026-03-31 27.23% 26.73% -0.50%
3 2026-03-25 — 27.23% —

Full EPSS history (21 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2024-22393

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.1 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.2 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2024-22393

GitHub Security Advisory for CVE-2024-22393

GHSA-rmqp-mvv2-54c6 · Severity: high · Ecosystem: go — Apache Answer Unrestricted Upload of File with Dangerous Type vulnerability

Affected software / configurations for CVE-2024-22393

Vendor Product Version Raw CPE
apache answer < 1.2.5 cpe:2.3:a:apache:answer:*:*:*:*:*:*:*:*

References for CVE-2024-22393

cvelogic Threat Intelligence