CVE-2024-38353

CodiMD - Missing Image Access Controls and Unauthorized Image Access

MEDIUM
5.3
CVSS Score
Published: July 10, 2024 at 07:50 PM UTC
Updated: June 17, 2026 at 07:39 AM UTC
2 products affected across 2 vendorsCodimdCodimd

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Severity
MEDIUM5.3
Exploit prediction
EPSS 1%
SSVC
PoC

Description

CodiMD allows realtime collaborative markdown notes on all platforms. CodiMD before 2.5.4 is missing authentication and access control vulnerability allowing an unauthenticated attacker to gain unauthorised access to image data uploaded to CodiMD. CodiMD does not require valid authentication to access uploaded images or to upload new image data. An attacker who can determine an uploaded image's URL can gain unauthorised access to uploaded image data. Due to the insecure random filename generation in the underlying Formidable library, an attacker can determine the filenames for previously uploaded images and the likelihood of this issue being exploited is increased. This vulnerability is fixed in 2.5.4.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2.5.4
Affected range stops below 2.5.4, so it looks safe — our inference, not a vendor statement
v < 2.5.4
Affected range stops below 2.5.4, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

x_refsource_CONFIRMExploitMitigationThird Party Advisory
https://github.com/hackmdio/codimd/security/advisories/GHSA-2764-jppc-p2hm

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-338CWE-862

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