EUVD-2026-65704
GHSA-g7gc-gmgp-wgqg
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Email gateways accept untrusted network input with no authentication; impact is pure CPU availability exhaustion with zero confidentiality or integrity effect.
Primary rating from Vendor (GitHub_M).
CVSS VectorVendor: GitHub_M
Lifecycle Timeline
4DescriptionCVE.org
eml_parser serves as a python module for parsing eml files and returning various information found in the e-mail as well as computed information. Prior to 3.0.2, eml_parser.routing.noparenthesis in eml_parser/routing.py removes parenthesized CFWS comments from Received: headers with a regex-based fix-point loop whose running time is quadratic in the nesting depth. A single Received: header with 5,000 nested parentheses causes approximately 1.3 seconds of CPU saturation per parsed message, and doubling the nesting depth approximately quadruples the running time. An attacker can submit relatively small EML files that consume multiple seconds of processing time, causing worker latency, queue backpressure, and possible service-level outages in synchronous gateways, sandboxes, and real-time triage pipelines. This issue is fixed in version 3.0.2.
AnalysisAI
CPU exhaustion denial-of-service in eml_parser (Python pip package, versions prior to 3.0.2) stems from a quadratic-time regex fix-point loop in the noparenthesis function used to strip parenthesized CFWS comments from Received: email headers. Remote, unauthenticated attackers can submit small, specially crafted EML files containing deeply nested parentheses that consume multiple seconds of CPU time per parsed message, degrading throughput and causing queue backpressure or service-level outages in synchronous email gateways, sandboxes, and real-time triage pipelines. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that an attacker be able to submit EML files to a system running eml_parser prior to 3.0.2 - typically via an email gateway accepting inbound SMTP from the internet, a REST API ingesting EML uploads, or a malware sandbox or triage pipeline. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.5 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) accurately captures the key risk dimensions: the attack surface is any network-accessible endpoint that accepts EML input, complexity is negligible, and no credentials are needed against a default deployment. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade eml_parser to version 3.0.2 or later immediately via `pip install 'eml_parser>=3.0.2'`. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Immediately identify all systems using eml_parser by checking Python package inventories and scanning deployed email infrastructure; prioritize production email gateways, threat sandboxes, and synchronous processing systems. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
Wazuh SIEM platform versions 4.4.0 through 4.9.0 contain an unsafe deserialization vulnerability in the DistributedAPI t
BentoML version 1.4.2 and earlier contains an unauthenticated remote code execution vulnerability through insecure deser
pgAdmin 4 contains critical remote code execution vulnerabilities in the Query Tool download and Cloud Deployment endpoi
The renderLocalView function in render/views.py in graphite-web in Graphite 0.9.5 through 0.9.10 uses the pickle Python
BentoML is a Python library for building online serving systems optimized for AI apps and model inference. Rated critica
OpenSSL before 0.9.8za, 1.0.0 before 1.0.0m, and 1.0.1 before 1.0.1h does not properly restrict processing of ChangeCiph
pyLoad download manager version prior to 0.5.0b3.dev77 exposes the Flask SECRET_KEY through an unauthenticated endpoint.
Langflow (a visual LLM pipeline builder) contains a critical unauthenticated code execution vulnerability (CVE-2026-3301
In Mercurial before 4.1.3, "hg serve --stdio" allows remote authenticated users to launch the Python debugger, and conse
Unauthenticated remote code execution affects Kestra OSS (the open-source event-driven orchestration platform) prior to
Unauthenticated remote code execution in Marimo ≤0.20.4 allows attackers to execute arbitrary system commands via the `/
pyLoad is the free and open-source Download Manager written in pure Python. Rated medium severity (CVSS 5.3), this vulne
Same technique Denial Of Service
View allShare
External POC / Exploit Code
Leaving vuln.today