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NVD / CVE Program· CNA GitHub_M

CVE-2024-42367: In aiohttp, compressed files as symlinks are not protected from path traversal

Noroxi assessment

Priority: Monitor (action score 19/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.65% (FIRST EPSS); higher than 51.1% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. Special conditions such as timing or configuration are required.
  • Fixed version: python-aiohttp (Debian:13) 3.10.3-2; python-aiohttp (openSUSE:Leap 15.5) 3.9.3-150400.10.24.1; python-aiohttp (openSUSE:Tumbleweed) 3.14.3-1.1, 3.10.5-1.1.

Low priority for now. Upgrade to python-aiohttp (Debian:13) 3.10.3-2; python-aiohttp (openSUSE:Leap 15.5) 3.9.3-150400.10.24.1; python-aiohttp (openSUSE:Tumbleweed) 3.14.3-1.1, 3.10.5-1.1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. In versions on the 3.10 branch prior to version 3.10.2, static routes which contain files with compressed variants (`.gz` or `.br` extension) are vulnerable to path traversal outside the root directory if those variants are symbolic links. The server protects static routes from path traversal outside the root directory when `follow_symlinks=False` (default). It does this by resolving the requested URL to an absolute path and then checking that path relative to the root. However, these checks are not performed when looking for compressed variants in the `FileResponse` class, and symbolic links are then automatically followed when performing the `Path.stat()` and `Path.open()` to send the file. Version 3.10.2 contains a patch for the issue.

MediumCVSS 4.8 · v3.1—No exploit Fix available
Published
Aug 12, 2024
Updated
Jun 17, 2026
EPSS
0.6% · 51th percentile

Report tools

JSON

Action score

19

Monitor

Low priority for now.

CVSS
19 / 40 · 4.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.6%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
4.8
CNA · GitHub_M
4.8
agree

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2024-42367

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
aiohttpaiohttp

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • aiohttp aiohttp3.10.0 and later · before 3.10.2

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

  • aio-libs aiohttp

    • >= 3.10.0b1, < 3.10.2affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12python-aiohttpfrom 0—
Debian:13python-aiohttpbefore 3.10.3-23.10.3-2
openSUSE:Leap 15.5python-aiohttpbefore 3.9.3-150400.10.24.13.9.3-150400.10.24.1
openSUSE:Tumbleweedpython-aiohttpbefore 3.14.3-1.13.14.3-1.1
openSUSE:Tumbleweedpython-aiohttpbefore 3.10.5-1.13.10.5-1.1
PyPIaiohttpfrom 3.10.0b1 · before 3.10.23.10.2
SUSE:Linux Enterprise Module for Public Cloud 15 SP4python-aiohttpbefore 3.9.3-150400.10.24.13.9.3-150400.10.24.1

Same product

aiohttp: all records

Other highest-scoring records for the same primary product.

  • CVE-2024-23334aiohttp.web.static(follow_symlinks=True) is vulnerable to directory traversal
    53Plan
  • CVE-2024-52303aiohttp memory leak when middleware is enabled when requesting a resource with a non-allowed method
    34Monitor
  • CVE-2025-69223AIOHTTP's HTTP Parser auto_decompress feature is vulnerable to zip bomb
    30Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2024-27306Apr 18, 2024 · aiohttp vulnerable to XSS on index pages for static file handling
    24Monitor
  • ← EarlierCVE-2024-30251May 2, 2024 · Denial of service when trying to parse malformed POST requests in aiohttp
    30Monitor
  • Later →CVE-2024-52304Nov 18, 2024 · aiohttp vulnerable to request smuggling due to incorrect parsing of chunk extensions
    25Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:python-aiohttp3.10.3-2 · Debian:13Package registry (OSV)
opensuse:python-aiohttp3.9.3-150400.10.24.1 · openSUSE:Leap 15.5Package registry (OSV)
PyPI:aiohttp3.10.2Package registry (OSV)
suse:python-aiohttp3.9.3-150400.10.24.1 · SUSE:Linux Enterprise Module for Public Cloud 15 SP4Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
low · data can be read
Integrity
low · data or configuration can be modified
Availability
none
Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
Low
Integrity impact
Low
Availability impact
None

Weakness class (CWE)

CWE-61 · UNIX Symbolic Link (Symlink) Following

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (4 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records