CVE-2026-2687Public exploitNetwork attack vector

Stored XSS via unescaped progress-bar settings

Published Mar 12, 2026 · Updated Mar 12, 2026

Stored XSS in Jean-Baptiste Audras Reading progressbar before 1.3.1 allows remote authenticated users to execute script via plugin settings. The plugin saves the Progressbar height and custom target class or ID fields without sanitization, then emits those values into page markup without escaping. Administrator privileges and a later page view are required; the injected script runs in the viewer's browser even when unfiltered_html is disabled.

CVSS severity4.3
Medium
EPSS probability0.14%
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 Jean-Baptiste Audras Reading progressbar before 1.3.1 allows remote authenticated users to execute script via plugin settings. The plugin saves the Progressbar height and custom target class or ID fields without sanitization, then emits those values into page markup without escaping. Administrator privileges and a later page view are required; the injected script runs in the viewer's browser even when unfiltered_html is disabled.

The record

CVE
CVE-2026-2687
Published
Mar 12, 2026
Updated
Mar 12, 2026
Vendor
Jean-Baptiste Audras
Product
Reading progressbar
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Mar 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 12, 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 <1.3.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Jean-Baptiste Audras · Reading progressbarversion=0 <1.3.1

Published CVSS scores

4.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:L

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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