How severe is CVE-2023-29159?

CVE-2023-29159 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2023-29159 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-29159?

CVE-2023-29159 affects Encode Starlette. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-29159?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-29159 published?

CVE-2023-29159 was published on 2023-06-01 and last updated on 2026-06-17.

CVE-2023-29159

CVE-2023-29159 is a high-severity vulnerability in Encode Starlette with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Encode Starlette
Published: 2023-06-01
Last modified: 2026-06-17

Description

Directory traversal vulnerability in Starlette versions 0.13.5 and later and prior to 0.27.0 allows a remote unauthenticated attacker to view files in a web service which was built using Starlette.

Frequently asked questions

What is CVE-2023-29159?: Directory traversal vulnerability in Starlette versions 0.13.5 and later and prior to 0.27.0 allows a remote unauthenticated attacker to view files in a web service which was built using Starlette.
How severe is CVE-2023-29159?: CVE-2023-29159 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2023-29159 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-29159?: CVE-2023-29159 affects Encode Starlette. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-29159?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-29159 published?: CVE-2023-29159 was published on 2023-06-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:encode:starlette:*:*:*:*:*:python:*:*

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