Apache JSPWiki: Debug Messages Revealing Unnecessary Information
CVE-2026-28811 is a high-severity debug messages revealing unnecessary information vulnerability in Apache JSPWiki from Apache, with a CVSS 3.1 base score of 7.5 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. The record lists version up to 3.0.0 as the first without the flaw, so updating Apache JSPWiki to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.79% chance of exploitation within 30 days, higher than 57% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Apache JSPWiki to up to 3.0.0 or a later version.
- Update Jspwiki to 2.12.4 or a later version.
- Read the advisory on jspwiki-wiki.apache.org for workarounds and exact fixed builds.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Apache | Apache JSPWiki | before up to 3.0.0 | up to 3.0.0 |
| Apache | Jspwiki | before 2.12.4 | 2.12.4 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- NoneNothing can be modified.
- Availability
- NoneAvailability is not affected.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. Scored by CISA (ADP).
Official description
Debug Messages Revealing Unnecessary Information in Apache JSPWiki up to 2.12.3. Users are recommended to upgrade to version 2.12.4, which fixes this issue.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Debug Messages Revealing Unnecessary Information
The product fails to adequately prevent the revealing of unnecessary and potentially sensitive system information within debugging messages.
How developers prevent this class of flaw
- Ensure that a debug message does not reveal any unnecessary information during the debug process for the intended response.
More Debug Messages Revealing Unnecessary Information vulnerabilities (CWE-1295)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Advisories
Third-party and government advisories
- openwall.com/lists/oss-security/2026/07/30/14Mailing List, Third Party Advisory
Other vulnerabilities in Apache JSPWiki
- 7.5 High severity
- 8.8 High severity
- 9.8 Critical severity
- 7.5 High severity
- 8.8 High severity
- 8.8 High severity
Recent Debug Messages Revealing Unnecessary Information vulnerabilities
- 7.5 High severity
- 7.5 High severity
- 8.8 High severity
- 7.5 High severity
- 7.5 High severity
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