CVE-2026-24476Public exploit

Stored XSS via unescaped suggested tags

Published Jan 26, 2026 · Updated Jan 26, 2026

Stored XSS in Shaarli before 0.16.0 allows attackers to execute script in an administrator's browser through an imported malicious tag. Suggested-tag templates interpolate tag names into HTML data-list attributes without escaping, so a leading quotation mark closes the attribute and permits arbitrary HTML. Exploitation requires an administrator to import a crafted Netscape bookmarks file and open a page that renders tag suggestions; injected script can act through that browser session or read exposed data.

CVSS severity5.3
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Shaarli before 0.16.0 allows attackers to execute script in an administrator's browser through an imported malicious tag. Suggested-tag templates interpolate tag names into HTML data-list attributes without escaping, so a leading quotation mark closes the attribute and permits arbitrary HTML. Exploitation requires an administrator to import a crafted Netscape bookmarks file and open a page that renders tag suggestions; injected script can act through that browser session or read exposed data.

The record

CVE
CVE-2026-24476
Published
Jan 26, 2026
Updated
Jan 26, 2026
Vendor
Shaarli
Product
Shaarli
Classifications
CWE-79, T1059.007
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jan 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 26, 2026Record 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=< 0.16.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Shaarli · Shaarliversion=< 0.16.0

Published CVSS scores

5.3GitHub, Inc.CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
5.4NIST NVDCVSS: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.

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No observations available

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

Weakness, pattern, technique

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

Public exploit references

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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