CVE-2023-37901Network attack vector

Script execution via HTML-rendered confirmation messages

Published Jul 21, 2023 · Updated Oct 10, 2024

Stored cross-site scripting in Indico before 3.2.6 allows remote authenticated users to execute script in an organizer's browser. Client-side confirmPrompt builds its message element with jQuery's html option, so attacker-controlled content embedded in deletion prompts is parsed as markup instead of text. An attacker needs submission privileges to plant the content, and another user must open its deletion confirmation; executed script can act in that user's Indico session.

CVSS severity5.4
Medium
EPSS probability0.52%
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 Indico before 3.2.6 allows remote authenticated users to execute script in an organizer's browser. Client-side confirmPrompt builds its message element with jQuery's html option, so attacker-controlled content embedded in deletion prompts is parsed as markup instead of text. An attacker needs submission privileges to plant the content, and another user must open its deletion confirmation; executed script can act in that user's Indico session.

The record

CVE
CVE-2023-37901
Published
Jul 21, 2023
Updated
Oct 10, 2024
Vendor
CERN
Product
Indico
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 21, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 10, 2024Record 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=< 3.2.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

CERN · Indicoversion=< 3.2.6

Published CVSS scores

5.4GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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.

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Technologies

Your stack

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Your stack

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