CVE-2016-9645: The fix for ikiwiki for CVE-2016-10026 was incomplete resulting in editing restriction bypass for git revert w

Q: How do I fix CVE-2016-9645?

ikiwiki: upgrade to 2.8. Exact commands for each OS are on this page.

Q: Is CVE-2016-9645 being exploited?

CVE-2016-9645 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2016-9645 affect?

CVE-2016-9645 affects ikiwiki. Severity is medium (CVSS 6.5). The fix for ikiwiki for CVE-2016-10026 was incomplete resulting in editing restriction bypass for git revert when using git versions older than 2.8.0. This has been fixed in 3.20161229.

Q: How urgent is CVE-2016-9645?

Priority 43/100. On your watchlist

This month

MEDIUM 6.5WATCHLISTUPGRADE

CVE-2016-9645 is a medium-severity flaw (CVSS 6.5) affecting ikiwiki. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The fix for ikiwiki for CVE-2016-10026 was incomplete resulting in editing restriction bypass for git revert when using git versions older than 2.8.0. This has been fixed in 3.20161229.

Why this priority

On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.9% (top 40%)
CISA exploited list	No
Weakness	CWE-284
Published	2018-04-10
Last modified	2026-06-17

Publisher (CNA): Debian GNU/Linux · Vendor: ikiwiki

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2018-04-10 22:29 UTCPublished CVE record published
2026-06-17 00:56 UTCUpdated Record last modified

ikiwiki ikiwiki UPGRADE

Affected: < 2.8

Fixed in: 2.8

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy ikiwiki || rpm -q ikiwiki || ikiwiki --version

2. UPGRADE to 2.8 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade ikiwiki

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ikiwiki

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2016-9645?

ikiwiki: upgrade to 2.8. Exact commands for each OS are on this page.

Is CVE-2016-9645 being exploited?

CVE-2016-9645 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2016-9645 affect?

CVE-2016-9645 affects ikiwiki. Severity is medium (CVSS 6.5). The fix for ikiwiki for CVE-2016-10026 was incomplete resulting in editing restriction bypass for git revert when using git versions older than 2.8.0. This has been fixed in 3.20161229.

How urgent is CVE-2016-9645?

Priority 43/100. On your watchlist

Software pages

Git vulnerabilities

Related CVEs

CVE-2019-9187 HIGH 7.5 UPGRADE ikiwiki before 3.20170111.1 and 3.2018x and 3.2019x before 3.20190228 allows SSRF via the aggregate plugin
CVE-2017-0356 CRITICAL 9.8 UPGRADE MITIGATE A flaw, similar to to CVE-2016-9646, exists in ikiwiki before 3.20170111, in the passwordauth plugin's use of
CVE-2016-9646 MEDIUM 5.3 UPGRADE MITIGATE ikiwiki before 3.20161229 incorrectly called the CGI::FormBuilder->field method (similar to the CGI->param API
CVE-2016-10026 HIGH 7.5 DOWNGRADE ikiwiki 3.20161219 does not properly check if a revision changes the access permissions for a page on sites wi
CVE-2015-2793 MEDIUM 6.1 UPGRADE MITIGATE Cross-site scripting (XSS) vulnerability in templates/openid-selector.tmpl in ikiwiki before 3.20150329 allows

References

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