PYSEC-2026-2012 vLLM vulnerable to DoS via large Chat Completion or Tokenization requests with specially crafted `chat_template_kwargs`

Summary The /v1/chat/completions and /tokenize endpoints allow a chattemplatekwargs request parameter that is used in the code before it is properly validated against the chat template. With the right chattemplatekwargs parameters, it is possible to block processing of the API server for long...

vLLM vulnerable to DoS via large Chat Completion or Tokenization requests with specially crafted `chat_template_kwargs`

SummaryThe /v1/chat/completions and /tokenize endpoints allow a chattemplatekwargs request parameter that is used in the code before it is properly validated against the chat template. With the right chattemplatekwargs parameters, it is possible to block processing of the API server for long...

PYSEC-2026-1518 LangChain Vulnerable to Template Injection via Attribute Access in Prompt Templates

Context A template injection vulnerability exists in LangChain's prompt template system that allows attackers to access Python object internals through template syntax. This vulnerability affects applications that accept untrusted template strings not just template variables in ChatPromptTemplate...

LangChain Vulnerable to Template Injection via Attribute Access in Prompt Templates

ContextA template injection vulnerability exists in LangChain's prompt template system that allows attackers to access Python object internals through template syntax. This vulnerability affects applications that accept untrusted template strings not just template variables in ChatPromptTemplate...

aa-rag (>=0.4.2, <=0.4.3), ab-auth-client-service (>=0.1.3, <=0.3.5) +1599 more potentially affected by CVE-2025-62727 via starlette (>=0.39.2, <=0.48.0)

starlette PYPI version =0.39.2, =0.4.2, =0.1.3, =0.2.0, =0.1.0, =0.1.0, =0.1.0, =0.2.1, =0.1.0, =0.1.1, =0.1.1, =0.1.2, =0.1.0, =0.1.0, =0.1.0, =0.1.0, =0.2.3 and more Source cves: CVE-2025-62727 Source advisory: OSV:PYSEC-2026-1942...

PYSEC-2026-2013 vLLM: Resource-Exhaustion (DoS) through Malicious Jinja Template in OpenAI-Compatible Server

Summary A resource-exhaustion denial-of-service vulnerability exists in multiple endpoints of the OpenAI-Compatible Server due to the ability to specify Jinja templates via the chattemplate and chattemplatekwargs parameters. If an attacker can supply these parameters to the API, they can cause a...

Django vulnerable to partial directory traversal via archives

An issue was discovered in Django 4.2 before 4.2.25, 5.1 before 5.1.13, and 5.2 before 5.2.7. The django.utils.archive.extract function, used by the "startapp --template" and "startproject --template" commands, allows partial directory traversal via an archive with file paths sharing a common...

PYSEC-2026-1296 Django vulnerable to partial directory traversal via archives

An issue was discovered in Django 4.2 before 4.2.25, 5.1 before 5.1.13, and 5.2 before 5.2.7. The django.utils.archive.extract function, used by the "startapp --template" and "startproject --template" commands, allows partial directory traversal via an archive with file paths sharing a common...

Copier's safe template has arbitrary filesystem read/write access

ImpactCopier's current security model shall restrict filesystem access through Jinja:- Files can only be read using % include ... %, which is limited by Jinja to reading files from the subtree of the local template clone in our case.- Files are written in the destination directory according to...

pyspur Incomplete Filtering of Special Elements allowed by SingleLLMCallNode function

A vulnerability was found in PySpur-Dev pyspur up to 0.1.18. It has been classified as critical. Affected is the function SingleLLMCallNode of the file backend/pyspur/nodes/llm/singlellmcall.py of the component Jinja2 Template Handler. The manipulation of the argument usermessage leads to imprope...

PYSEC-2026-1844 pyspur Incomplete Filtering of Special Elements allowed by SingleLLMCallNode function

A vulnerability was found in PySpur-Dev pyspur up to 0.1.18. It has been classified as critical. Affected is the function SingleLLMCallNode of the file backend/pyspur/nodes/llm/singlellmcall.py of the component Jinja2 Template Handler. The manipulation of the argument usermessage leads to imprope...

allennlp (>=0.8.0, <=0.8.2), lapdog (0.15.4) +15 more potentially affected by CVE-2024-6839 via flask-cors (3.0.7)

flask-cors PYPI version 3.0.7 is affected by a known vulnerability. The following packages have a transitive dependency on flask-cors and may be impacted: - allennlp =0.8.0, =0.5.1.dev0, =1.1.4, =3.9.6, =0.2.0, =0.1.0, =0.1.0, =0.1.3, =0.3.8, =0.2.3, =1.0.1, =1.4.0.dev26 and more Source cves:...

langchain-core allows unauthorized users to read arbitrary files from the host file system

A vulnerability in langchain-core versions =0.1.17,=0.2.0,=0.3.0,0.3.15 allows unauthorized users to read arbitrary files from the host file system. The issue arises from the ability to create langchaincore.prompts.ImagePromptTemplate's and by extension langchaincore.prompts.ChatPromptTemplate's...

PYSEC-2026-1517 langchain-core allows unauthorized users to read arbitrary files from the host file system

A vulnerability in langchain-core versions =0.1.17,=0.2.0,=0.3.0,0.3.15 allows unauthorized users to read arbitrary files from the host file system. The issue arises from the ability to create langchaincore.prompts.ImagePromptTemplate's and by extension langchaincore.prompts.ChatPromptTemplate's...

PYSEC-2026-1934 Spacy-LLM Server-Side Template Injection (SSTI) vulnerability

A Server-Side Template Injection SSTI vulnerability in Spacy-LLM v0.7.2 allows attackers to execute arbitrary code via injecting a crafted payload into the template field...

Spacy-LLM Server-Side Template Injection (SSTI) vulnerability

A Server-Side Template Injection SSTI vulnerability in Spacy-LLM v0.7.2 allows attackers to execute arbitrary code via injecting a crafted payload into the template field...

Jinja has a sandbox breakout through malicious filenames

A bug in the Jinja compiler allows an attacker that controls both the content and filename of a template to execute arbitrary Python code, regardless of if Jinja's sandbox is used.To exploit the vulnerability, an attacker needs to control both the filename and the contents of a template. Whether...

PYSEC-2026-1338 Remote Code Execution Vulnerability via SSTI in Fides Webserver Jinja Email Templating Engine

Summary The Email Templating feature uses Jinja2 without proper input sanitization or rendering environment restrictions, allowing for Server-Side Template Injection that grants Remote Code Execution to privileged users. A privileged user refers to an Admin UI user with the default Owner or...

Remote Code Execution Vulnerability via SSTI in Fides Webserver Jinja Email Templating Engine

SummaryThe Email Templating feature uses Jinja2 without proper input sanitization or rendering environment restrictions, allowing for Server-Side Template Injection that grants Remote Code Execution to privileged users. A privileged user refers to an Admin UI user with the default Owner or...

Cross-site Scripting in djangorestframework

Versions of the package djangorestframework before 3.15.2 are vulnerable to Cross-site Scripting XSS via the breaklongheaders template filter due to improper input sanitization before splitting and joining with tags...