CVE-2026-76098 Mistune has Denial of Service — RecursionError via Excessive Emphasis Markers in Markdown

Mistune is a Python Markdown parser with renderers and plugins. Versions 3.3.0 through 3.3.2 are vulnerable to DoS through deeply nested tokens. HTML rendering creates deeply nested emphasis tokens from consecutive asterisk characters, and recursive rendering in HTMLRenderer.rendertoken can excee...

CVE-2026-76098

Mistune (Python Markdown parser) versions 3.3.0 through 3.3.2 are vulnerable to Denial of Service via deeply nested emphasis tokens. When HTML rendering processes consecutive asterisk characters, recursive calls in HTMLRenderer.render_token() can exceed Python's recursion limit, raising a Recursi...

CVE-2026-76098

Mistune is a Python Markdown parser with renderers and plugins. Versions 3.3.0 through 3.3.2 are vulnerable to DoS through deeply nested tokens. HTML rendering creates deeply nested emphasis tokens from consecutive asterisk characters, and recursive rendering in HTMLRenderer.rendertoken can excee...

kernel: net: openvswitch: reject oversized nested action attrs

A flaw was found in Open vSwitch in the Linux kernel. Improper handling of oversized nested action attributes can lead to a truncated length field, which could be exploited by a local attacker to alter kernel memory. This alteration might result in the disclosure of sensitive information or a loc...

kernel: net: openvswitch: reject oversized nested action attrs

A flaw was found in Open vSwitch in the Linux kernel. Improper handling of oversized nested action attributes can lead to a truncated length field, which could be exploited by a local attacker to alter kernel memory. This alteration might result in the disclosure of sensitive information or a loc...

kernel: net: openvswitch: reject oversized nested action attrs

A flaw was found in Open vSwitch in the Linux kernel. Improper handling of oversized nested action attributes can lead to a truncated length field, which could be exploited by a local attacker to alter kernel memory. This alteration might result in the disclosure of sensitive information or a loc...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: nv: removed the spurious WARN message when writing to ZCREL2. It is entirely possible for a guest to write to the ZCREL2 sysreg alias while in a nested context. This is expected if FEATNV2 is advertised to the L1...

Astra Linux – Vulnerability in Thunderbird

Thunderbird’s handling of the X-Mozilla-External-Attachment-URL header can be exploited to execute JavaScript in the file:/// context. By creating a nested email attachment message/rfc822 and setting its content type to application/pdf, Thunderbird may incorrectly render it as HTML when opened,...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: Update x2APIC MSR intercepts if AVIC is inhibited while L2 is active Always update x2APIC MSR intercepts for L1 when AVIC is deactivated, even if L2 is active and KVM uses a separate MSR bitmap to run L2. If AVIC is ful...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: Counter: Interrupt-cnt: Remove the IRQFNOTHREAD flag An IRQ handler can either use IRQFNOTHREAD or acquire spinlockt. As noted by CONFIGPROVERAWLOCKNESTING: ============================= BUG: Invalid wait context 6.18.0-rc1+git...

Astra Linux – Vulnerability in Policykit-1

A flaw was discovered in polkit. When processing an XML policy with 32 or more nested elements at depth, an out-of-bounds write vulnerability can be triggered. This issue may lead to a crash or other unexpected behavior, and arbitrary code execution is possible without being detected. To exploit...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: KVM: x86: Acquiring kvm-srcu when handling KVMSETVCPUEVENTS Acquire kvm-srcu when processing KVMSETVCPUEVENTS. When SMM mode is toggled, KVM will forcibly leave the nested VMX/SVM state. Leaving such a state also results in...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: KVM: nVMX: Moving the consistency check between vTPR and TPR Threshold to “normal” checks Moving the off-by-default consistency check for vmcs12.tprthreshold versus the virtual APIC vTPR to the “normal” control checks is...

PT-2026-81027

Name of the Vulnerable Software and Affected Versions Mistune versions 3.3.0 through 3.3.2 Description This issue allows a Denial of Service DoS through deeply nested tokens. When rendering HTML, consecutive asterisk characters can create deeply nested emphasis tokens. The recursive rendering...

Duplicate Advisory: Uncontrolled recursion DoS in JustHTML() via deeply nested HTML

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-v7cf-c9rm-wm3j. This link is maintained to preserve external references. Original Description justhtml through 1.9.1 fixed in 1.10.0 is vulnerable to uncontrolled recursion leading to denial of service. During...

CVE-2026-9769 justhtml before 1.10.0 Denial of Service via deeply nested HTML

justhtml through 1.9.1 fixed in 1.10.0 is vulnerable to uncontrolled recursion leading to denial of service. During JustHTML construction, TreeBuilder.finish unconditionally calls populateselectedcontent, which recursively traverses the DOM tree via findelements/findelement without a depth bound...

CVE-2026-9769 justhtml before 1.10.0 Denial of Service via deeply nested HTML

justhtml through 1.9.1 fixed in 1.10.0 is vulnerable to uncontrolled recursion leading to denial of service. During JustHTML construction, TreeBuilder.finish unconditionally calls populateselectedcontent, which recursively traverses the DOM tree via findelements/findelement without a depth bound...

CVE-2026-9769 justhtml before 1.10.0 Denial of Service via deeply nested HTML

justhtml through 1.9.1 fixed in 1.10.0 is vulnerable to uncontrolled recursion leading to denial of service. During JustHTML construction, TreeBuilder.finish unconditionally calls populateselectedcontent, which recursively traverses the DOM tree via findelements/findelement without a depth bound...

CVE-2026-9769

justhtml (Python HTML parser) through version 1.9.1 is vulnerable to uncontrolled recursion leading to denial of service. During JustHTML() construction, TreeBuilder.finish() unconditionally calls _populate_selectedcontent(), which recursively traverses the DOM tree via _find_elements()/_find_ele...

Duplicate Advisory: Natural Language Toolkit (NLTK) has unbounded recursion in JSONTaggedDecoder.decode_obj() may cause DoS

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-rf74-v2fm-23pw. This link is maintained to preserve external references. Original Description NLTK versions before 3.9.4 contain an unbounded recursion vulnerability in JSONTaggedDecoder.decodeobj that allows...