Trending
CVE-2026-42253

CVE detail

CVE-2026-42253

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Apache ActiveMQ, Apache ActiveMQ Web. The MessageServlet in the ActiveMQ web console API copies every JMS message property into an HTTP response header without any validation. This can allow overwriting and injecting security headers by setting them on JMS messages that are returned by the servlet. This issue affects Apache ActiveMQ: before 5.19.7, from 6.0.0 before 6.2.6; Apache ActiveMQ Web: before 5.19.7, from 6.0.0 before 6.2.6. Users are recommended to upgrade to version 5.19.7 or 6.2.6, which fixes the issue. The MessageServlet has now been deprecated and disabled by default.

CVSS 6.1 · MediumBuzz score 21.0

Buzz score

Why this CVE is surfacing

Buzz score total 21.0

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 11.0 · diversity 10.0 · KEV 0.0 · OTX 0.0 · PoC 0.0

Mention score

11.0

2 evidence mentions in the snapshot

Diversity score

10.0

2 sources across 2 categories

KEV score

0.0

No KEV entry observed

OTX score

0.0

0 OTX pulses

PoC score

0.0

0 repos · best confidence N/A

Best PoC traction

Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions: 0; within the 30d window
Peak daily: 0; highest bucket

Evidence

Source links by recency

Newest mentions first

2 source links · newest first

http://www.openwall.com/lists/oss-security/2026/05/31/17www.openwall.com
No excerpt available.
Exploitwww.openwall.comJun 1, 2026, 9:16 AM
https://lists.apache.org/thread/j9vmlc410ht5f28fc98gx75jcbq62j00lists.apache.org
No excerpt available.
Vendor Advisorylists.apache.orgJun 1, 2026, 9:16 AM

Exploit code

Public exploit repository references

Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.

0 repository references · best confidence N/A · max 0 stars

No public PoC repositories have been matched yet.

Related records

Similar CVEs

6 related CVEs with shared weakness or product evidence

CVE-2026-52760
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Apache ActiveMQ, Apache ActiveMQ Web Console. The browse page in the web con…
CVSS 6.1 · Medium
2 mentions
CVE-2026-41043
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Apache ActiveMQ, Apache ActiveMQ Web. An authenticated attacker can show malicious…
CVSS 6.5 · Medium
2 mentions
CVE-2020-13947
An instance of a cross-site scripting vulnerability was identified to be present in the web based administration console on the message.jsp page of Apache ActiveMQ versions 5.15.1…
CVSS 6.1 · Medium
CVE-2020-1941
In Apache ActiveMQ 5.0.0 to 5.15.11, the webconsole admin GUI is open to XSS, in the view that lists the contents of a queue.
CVSS 6.1 · Medium
CVE-2019-10241
In Eclipse Jetty version 9.2.26 and older, 9.3.25 and older, and 9.4.15 and older, the server is vulnerable to XSS conditions if a remote client USES a specially formatted URL aga…
CVSS 6.1 · Medium
CVE-2018-8006
An instance of a cross-site scripting vulnerability was identified to be present in the web based administration console on the queue.jsp page of Apache ActiveMQ versions 5.0.0 to…
CVSS 6.1 · Medium

External lookup

Potential internet exposure

Potential exposure only — not proof of vulnerability.Shodan results indicate potentially internet-exposed products, not confirmed vulnerable systems. They do not confirm that any returned system is vulnerable to CVE-2026-42253.

Product-level CPE searches intentionally omit version fields and NVD version-range or configuration certainty. Verify the exact product version and configuration independently.

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Product CPE queries

Derived from this CVE's existing NVD CPE 2.3 records; the application, operating-system, or hardware part is retained.

cpe:2.3:a:apache:activemqSearch this product on Shodan
cpe:2.3:a:apache:activemq_webSearch this product on Shodan

Exact CVE query

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Metadata

Canonical fields

NVD status

Analyzed

Published

Jun 1, 2026

Modified

Jul 22, 2026

Official record

Authoritative NVD record

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CWE IDs

Vendor classifications

How this vector reads

CVSS 3.1 base metrics decoded below. This explanation does not recalculate or change the NVD score.

Attack Vector (AV): Network. The vulnerable system can be reached across network boundaries.
Attack Complexity (AC): Low. No special conditions beyond the attacker-controlled steps are required.
Privileges Required (PR): None. The attacker needs no privileges on the vulnerable system.
User Interaction (UI): Required. Another user must take an action for exploitation to succeed.
Scope (S): Changed. Impacts can cross into a different security authority.
Confidentiality Impact (C): Low. There is a limited impact to this security property.
Integrity Impact (I): Low. There is a limited impact to this security property.
Availability Impact (A): None. There is no direct impact to this security property.

Signals

Exploitation indicators

0 stored signals · no KEV · 0 OTX pulses