CVE-2023-2954Network attack vector

Authenticated script execution via unsanitized comment Markdown

Published May 29, 2023 · Updated Jan 13, 2025

Stored cross-site scripting in DjangoBlog allows remote authenticated users to execute scripts in readers' browsers through crafted comments. The comment templates passed escaped comment bodies through a Markdown filter whose generated HTML was marked safe without allowlist sanitization. A low-privileged account must store a malicious comment and a reader must view it; execution remains within the reader's browser context.

CVSS severity5.4
Medium
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in DjangoBlog allows remote authenticated users to execute scripts in readers' browsers through crafted comments. The comment templates passed escaped comment bodies through a Markdown filter whose generated HTML was marked safe without allowlist sanitization. A low-privileged account must store a malicious comment and a reader must view it; execution remains within the reader's browser context.

The record

CVE
CVE-2023-2954
Published
May 29, 2023
Updated
Jan 13, 2025
Vendor
liangliangyy
Product
DjangoBlog
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 29, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 13, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <master

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

liangliangyy · DjangoBlogversion=unspecified <master

Published CVSS scores

5.4NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
4.8huntr.devCVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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