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CVE-2018-1000641

30
FAUCET Score

CVE-2018-1000641 is a critical PHP Object Injection vulnerability affecting YesWiki versions up to and including cercopitheque beta 1. This flaw, found in the i18n.inc.php file, allows for the deserialization of user-supplied input, leading to potential arbitrary code execution and information disclosure. With a CVSS score of 9.8, it is easily exploitable over the network without user interaction, posing a high risk to confidentiality, integrity, and availability. Despite its severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2012-10-22-1CPE matchmatch criteria
cpe:2.3:a:yeswiki:yeswiki:2012-10-22-1:*:*:*:*:*:*:*
2013-10-17-1CPE matchmatch criteria
cpe:2.3:a:yeswiki:yeswiki:2013-10-17-1:*:*:*:*:*:*:*
2016-03-17-1CPE matchmatch criteria
cpe:2.3:a:yeswiki:yeswiki:2016-03-17-1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.49%
Probability of exploitation in next 30 days
EPSS Percentile
83.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0249 is in the 73rd percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

0dd.zone / 2018/08/05/YesWiki-Object-Injection
Third Party Advisory
github.com / YesWiki/yeswiki/issues/356
Issue TrackingPatchThird Party Advisory