Synapse vulnerable to federation denial of service via malformed events

ImpactA malicious server can craft events with a depth outside the integer range allowed by Canonical JSON. When such an event is received by Synapse version up to 1.127.0, it prevents it from federating with other servers. The vulnerability has been exploited in the wild. PatchesFixed in Synapse...

Synapse Matrix has a partial room state leak via Sliding Sync

ImpactThe Sliding Sync feature on Synapse versions between 1.113.0rc1 and 1.120.0 can leak partial room state changes to users no longer in a room. Non-state events, like messages, are unaffected. PatchesSynapse version 1.120.1 fixes the problem. WorkaroundsDisable Sliding Sync...

Synapse allows unsupported content types to lead to memory exhaustion

ImpactIn Synapse before 1.120.1, multipart/form-data requests can in certain configurations transiently increase memory consumption beyond expected levels while processing the request, which can be used to amplify denial of service attacks. PatchesSynapse 1.120.1 resolves the issue by denying...

PYSEC-2026-1610 Synapse Matrix has a partial room state leak via Sliding Sync

Impact The Sliding Sync feature on Synapse versions between 1.113.0rc1 and 1.120.0 can leak partial room state changes to users no longer in a room. Non-state events, like messages, are unaffected. Patches Synapse version 1.120.1 fixes the problem. Workarounds Disable Sliding Sync. References...

Synapse can be forced to thumbnail unexpected file formats, invoking external, potentially untrustworthy decoders

ImpactIn Synapse versions before 1.120.1, enabling the dynamicthumbnails option or processing a specially crafted request could trigger the decoding and thumbnail generation of uncommon image formats, potentially invoking external tools like Ghostscript for processing.This significantly expands t...

Synapse allows a a malformed invite to break the invitee's `/sync`

ImpactSynapse versions before 1.120.1 fail to properly validate invites received over federation. This vulnerability allows a malicious server to send a specially crafted invite that disrupts the invited user's /sync functionality. PatchesSynapse 1.120.1 rejects such invalid invites received over...

PYSEC-2026-1611 Synapse allows a a malformed invite to break the invitee's `/sync`

Impact Synapse versions before 1.120.1 fail to properly validate invites received over federation. This vulnerability allows a malicious server to send a specially crafted invite that disrupts the invited user's /sync functionality. Patches Synapse 1.120.1 rejects such invalid invites received ov...

PYSEC-2026-1615 Synapse can be forced to thumbnail unexpected file formats, invoking external, potentially untrustworthy decoders

Impact In Synapse versions before 1.120.1, enabling the dynamicthumbnails option or processing a specially crafted request could trigger the decoding and thumbnail generation of uncommon image formats, potentially invoking external tools like Ghostscript for processing. This significantly expands...

PYSEC-2026-1613 Synapse allows unsupported content types to lead to memory exhaustion

Impact In Synapse before 1.120.1, multipart/form-data requests can in certain configurations transiently increase memory consumption beyond expected levels while processing the request, which can be used to amplify denial of service attacks. Patches Synapse 1.120.1 resolves the issue by denying...

TinyMCE Cross-Site Scripting (XSS) vulnerability using noscript elements

ImpactA cross-site scripting XSS vulnerability was discovered in TinyMCE’s content parsing code. This allowed specially crafted noscript elements containing malicious code to be executed when that content was loaded into the editor. PatchesThis vulnerability has been patched in TinyMCE 7.2.0,...

PYSEC-2026-1302 TinyMCE Cross-Site Scripting (XSS) vulnerability using noscript elements

Impact A cross-site scripting XSS vulnerability was discovered in TinyMCE’s content parsing code. This allowed specially crafted noscript elements containing malicious code to be executed when that content was loaded into the editor. Patches This vulnerability has been patched in TinyMCE 7.2.0,...

XML External Entity (XXE) Injection

Overview ebookmeta is a Read/write ebook metadata for fb2, epub2 and epub3 files Affected versions of this package are vulnerable to XML External Entity XXE Injection in the ebookmeta.getmetadata function via lxml dependency allows attackers to access sensitive information or cause a Denial of...

Invalid char to bool conversion when printing a tensor

ImpactWhen printing a tensor, we get it's data as a const char array since that's the underlying storage and then we typecast it to the element type. However, conversions from char to bool are undefined if the char is not 0 or 1, so sanitizers/fuzzers will crash. PatchesWe have patched the issue ...

PYSEC-2026-1954 Invalid char to bool conversion when printing a tensor

Impact When printing a tensor, we get it's data as a const char array since that's the underlying storage and then we typecast it to the element type. However, conversions from char to bool are undefined if the char is not 0 or 1, so sanitizers/fuzzers will crash. Patches We have patched the issu...

glib2: Fix of CVE-2026-58016

CVE-2026-58016: fix XML parser state handling for element nesting in D-Bus introspection XML...

Security Bulletin: IBM Maximo Scheduler Optimizer uses log4j-core-2.25.3.jar which is vulnerable to CVE-2026-34477, CVE-2026-34478, CVE-2026-34479, CVE-2026-34480

Summary IBM Maximo Scheduler Optimizer uses log4j-core-2.25.3.jar which is vulnerable to CVE-2026-34477, CVE-2026-34478, CVE-2026-34479, CVE-2026-34480. This bulletin contains information regarding the vulnerability and its fixture. Vulnerability Details CVEID:CVE-2026-34477 DESCRIPTION: The fix...

Security Bulletin: IBM Maximo Scheduler Optimizer uses log4j-core-2.25.3.jar which is vulnerable to CVE-2026-34477, CVE-2026-34478, CVE-2026-34480

Summary IBM Maximo Scheduler Optimizer uses log4j-core-2.25.3.jar which is vulnerable to CVE-2026-34477, CVE-2026-34478, CVE-2026-34480. This bulletin contains information regarding the vulnerability and its fixture. Vulnerability Details CVEID:CVE-2026-34477 DESCRIPTION: The fix for CVE-2025-681...

Security Bulletin: IBM Maximo Scheduler Optimizer uses log4j-core-2.25.3.jar which is vulnerable to CVE-2026-34477, CVE-2026-34478

Summary IBM Maximo Scheduler Optimizer uses log4j-core-2.25.3.jar which is vulnerable to CVE-2026-34477, CVE-2026-34478. This bulletin contains information regarding the vulnerability and its fixture. Vulnerability Details CVEID:CVE-2026-34477 DESCRIPTION: The fix for CVE-2025-68161...

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-2026-1797 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...