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CVE-2016-4043

20
FAUCET Score

CVE-2016-4043 describes a bypass vulnerability in Chameleon (five.pt) within Plone versions 5.0rc1 through 5.1a1, allowing authenticated users with template editing permissions to circumvent Restricted Python. This medium-severity vulnerability (CVSS 4.9) has a network attack vector and low complexity, potentially leading to high integrity impact, though confidentiality and availability are not affected. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
5.0CPE matchmatch criteria
cpe:2.3:a:plone:plone:5.0:*:*:*:*:*:*:*
5.0CPE matchmatch criteria
cpe:2.3:a:plone:plone:5.0:rc1:*:*:*:*:*:*
5.0CPE matchmatch criteria
cpe:2.3:a:plone:plone:5.0:rc2:*:*:*:*:*:*
5.0CPE matchmatch criteria
cpe:2.3:a:plone:plone:5.0:rc3:*:*:*:*:*:*
5.0.1CPE matchmatch criteria
cpe:2.3:a:plone:plone:5.0.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

4.9MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
1.2
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.01%
Probability of exploitation in next 30 days
EPSS Percentile
59.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0101 is in the 65th percentile among its peer group of 3,562 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

pipGHSA-6h8x-73fx-q2h9medium

Chameleon in Plone allows Authentication Bypass

May 17, 2022

References

plone.org / security/hotfix/20160419/bypass-restricted-python
Vendor Advisory
openwall.com / lists/oss-security/2016/04/20/3
Mailing ListThird Party Advisory