PYSEC-2026-1797 Cross-Frame Scripting vulnerability has been found on Plone CMS

A Cross-Frame Scripting vulnerability has been found on Plone CMS affecting version below 6.0.5. An attacker could store a malicious URL to be opened by an administrator and execute a malicios iframe element...

PYSEC-2026-1067 Zope Command Execution Vulnerability

Unspecified vulnerability in Zope 2.12.x and 2.13.x, as used in Plone 4.0.x through 4.0.9, 4.1, and 4.2 through 4.2a2, allows remote attackers to execute arbitrary commands via vectors related to the p class in OFS/misc.py and the use of Python modules...

PYSEC-2026-897 Plone anonymous access to sub-objects in CMFEditions where KwAsAttributes classes were publishable

The CMFEditions component 2.x in Plone 4.0.x through 4.0.9, 4.1, and 4.2 through 4.2a2 does not prevent the KwAsAttributes classes from being publishable, which allows remote attackers to access sub-objects via unspecified vectors, a different vulnerability than CVE-2011-3587...

PYSEC-2026-896 Plone XSS Vulnerability

Cross-site scripting XSS vulnerability in skins/plonetemplates/defaulterrormessage.pt in Plone before 2.5.3 allows remote attackers to inject arbitrary web script or HTML via the typename parameter to Members/ipa/createObject...

PYSEC-2026-730 Plone Cross-site Scripting vulnerability in the LiveSearch module

Cross-site scripting XSS vulnerability in the LiveSearch module in Plone before 3.0.4 allows remote attackers to inject arbitrary web script or HTML via the Description field for search results, as demonstrated using the onerror Javascript even in an IMG tag...

PYSEC-2026-731 Plone Improper Session Management

Plone CMS before 3, places a base64 encoded form of the username and password in the ac cookie for the admin account, which makes it easier for remote attackers to obtain administrative privileges by sniffing the network...

PYSEC-2026-732 Plone credentials stored in session cookie

Plone CMS 3.1.x uses invariant data a client username and a server secret when calculating an HMAC-SHA1 value for an authentication cookie, which makes it easier for remote attackers to gain permanent access to an account by sniffing the network...

PYSEC-2026-734 Plone CMS Improper Session Management

Plone CMS before 3 places a base64 encoded form of the username and password in the ac cookie for all user accounts, which makes it easier for remote attackers to obtain access by sniffing the network...

PYSEC-2026-733 Plone allows remote users to modify arbitrary portraits

Plone 2.0.5, 2.1.2, and 2.5-beta1 does not restrict access to the 1 changeMemberPortrait, 2 deletePersonalPortrait, and 3 testCurrentPassword methods, which allows remote attackers to modify portraits...

PYSEC-2026-735 Improper Restriction of XML External Entity Reference in Plone

Plone before 5.2.3 allows XXE attacks via a feature that is protected by an unapplied permission of plone.schemaeditor.ManageSchemata therefore, only available to the Manager role...

PYSEC-2026-764 High severity vulnerability that affects Plone and Zope2

Unspecified vulnerability in 1 Zope 2.12.x before 2.12.19 and 2.13.x before 2.13.8, as used in Plone 4.x and other products, and 2 PloneHotfix20110720 for Plone 3.x allows attackers to gain privileges via unspecified vectors, related to a "highly serious vulnerability." NOTE: this vulnerability...

PYSEC-2026-737 SSRF attacks via tracebacks in Plone

Plone before 5.2.3 allows SSRF attacks via the tracebacks feature only available to the Manager role...

PYSEC-2026-736 Improper Restriction of XML External Entity Reference in Plone

Plone before 5.2.3 allows XXE attacks via a feature that is explicitly only available to the Manager role...

PT-2026-54521

Name of the Vulnerable Software and Affected Versions Plone versions 7.0.0 through 7.0.1 Plone versions 6.0.0 through 6.0.3 Plone versions 5.0.0 through 5.0.7 Description A critical remote code execution RCE flaw allows TALES injection via the Classic portlet. TALES is a templating language used ...

PYSEC-2026-459 Plone Unauthenticated Write Vulnerability

A privilege escalation issue in plone.app.contenttypes in Plone 4.3 through 5.2.1 allows users to PUT overwrite some content without needing write permission...

CVE-2026-28413

Products.isurlinportal is a replacement for isURLInPortal method in Plone. Prior to versions 2.1.0, 3.1.0, and 4.0.0, a url /login?camefrom=////evil.example may redirect to an external website after login. This issue has been patched in versions 2.1.0, 3.1.0, and 4.0.0...

PYSEC-2026-112

Products.isurlinportal is a replacement for isURLInPortal method in Plone. Prior to versions 2.1.0, 3.1.0, and 4.0.0, a url /login?camefrom=////evil.example may redirect to an external website after login. This issue has been patched in versions 2.1.0, 3.1.0, and 4.0.0...

CVE-2026-28413

Products.isurlinportal is a replacement for isURLInPortal method in Plone. Prior to versions 2.1.0, 3.1.0, and 4.0.0, a url /login?camefrom=////evil.example may redirect to an external website after login. This issue has been patched in versions 2.1.0, 3.1.0, and 4.0.0...

PYSEC-2026-112

Products.isurlinportal is a replacement for isURLInPortal method in Plone. Prior to versions 2.1.0, 3.1.0, and 4.0.0, a url /login?camefrom=////evil.example may redirect to an external website after login. This issue has been patched in versions 2.1.0, 3.1.0, and 4.0.0...

CVE-2026-28413 Products.isurlinportal: Possible open redirect when using more than 2 forward slashes

Products.isurlinportal is a replacement for isURLInPortal method in Plone. Prior to versions 2.1.0, 3.1.0, and 4.0.0, a url /login?camefrom=////evil.example may redirect to an external website after login. This issue has been patched in versions 2.1.0, 3.1.0, and 4.0.0...