CVE-2023-3531Public exploitNetwork attack vector

Browser script execution via encoded item fields

Published Jul 6, 2023 · Updated Nov 7, 2024

Stored cross-site scripting in Teampass before 3.0.10 allows remote attackers to execute browser scripts through crafted item fields. The item editor's simplePurifier routine failed to decode several numeric HTML entities before DOMPurify, allowing encoded markup to survive sanitization and remain stored. Execution requires another user to view the affected item, where the script runs in that user's Teampass session and can read or modify accessible page data.

CVSS severity5.4
Medium
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Stored cross-site scripting in Teampass before 3.0.10 allows remote attackers to execute browser scripts through crafted item fields. The item editor's simplePurifier routine failed to decode several numeric HTML entities before DOMPurify, allowing encoded markup to survive sanitization and remain stored. Execution requires another user to view the affected item, where the script runs in that user's Teampass session and can read or modify accessible page data.

The record

CVE
CVE-2023-3531
Published
Jul 6, 2023
Updated
Nov 7, 2024
Vendor
Teampass
Product
Teampass
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 6, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 7, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0 <3.0.10
  2. Affected versionversion=unspecified <3.0.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Teampass · Teampassversion=0 <3.0.10; version=unspecified <3.0.10

Published CVSS scores

8.1huntr.devCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
5.4NVDCVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo