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IkiwikiApplication

CVE-2016-10026

HIGH · 7.5 CVSS v3.0 Published 2017-02-13
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
84/100
Remediation priority · High
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
ikiwiki 3.20161219 does not properly check if a revision changes the access permissions for a page on sites with the git and recentchanges plugins and the CGI interface enabled, which allows remote attackers to revert certain changes by leveraging permissions to change the page before the revision was made.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

ikiwiki 3.20161219 fails to properly validate whether reverting a page to a prior revision changes access permissions. On sites with git and recentchanges plugins enabled alongside the CGI interface, an attacker who previously had permission to modify a page could potentially revert it to an older revision that grants different (potentially broader) access permissions, bypassing current authorization controls.

MitigationUpgrade to a patched version of ikiwiki. As a temporary measure, restrict CGI write access and limit who can push changes to the git repository.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
IkiwikiApplication
Affected:= 3.20161219

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Check installed ikiwiki version
    Run `ikiwiki --version` or look for the version in your package manager
    Affected if Version equals 3.20161219 exactly
  2. Verify git plugin is enabled
    Inspect your ikiwiki setup file (usually ikiwiki.setup or ikiwiki.yml) and look for 'git' in the enabled_plugins list
    Affected if The git plugin is listed in enabled_plugins
  3. Verify recentchanges plugin is enabled
    Inspect your ikiwiki setup file and look for 'recentchanges' in the enabled_plugins list
    Affected if The recentchanges plugin is listed in enabled_plugins
  4. Verify CGI interface is enabled
    Check your web server configuration and ikiwiki setup for CGI script handling (look for 'cgi' in setup or .cgi file references)
    Affected if CGI script handling is configured and active

You are affected if running exactly version 3.20161219 with all three components (git plugin, recentchanges plugin, and CGI interface) enabled simultaneously.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Upgrade to a patched version of ikiwiki. As a temporary measure, restrict CGI write access and limit who can push changes to the git repository.

Fix this in Ikiwiki Scoped from the published advisory
  • Consultation1.0 h
  • Implementation3.0 h
  • Testing2.0 h
  • Review / QA1.0 h
7.0 hours of engineering $1,220
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2016-10026 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data