How severe is CVE-2026-25480?

CVE-2026-25480 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-25480 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-25480?

CVE-2026-25480 affects Litestar. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-25480?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-25480 have an EU (EUVD) identifier?

Yes. CVE-2026-25480 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-6498.

When was CVE-2026-25480 published?

CVE-2026-25480 was published on 2026-02-09 and last updated on 2026-06-17.

CVE-2026-25480

CVE-2026-25480 is a medium-severity vulnerability in Litestar with a CVSS 3.x base score of 6.5. 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-176.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (33rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-6498
Weakness: CWE-176
Affected product: Litestar
Published: 2026-02-09
Last modified: 2026-06-17

Description

Litestar is an Asynchronous Server Gateway Interface (ASGI) framework. Prior to 2.20.0, FileStore maps cache keys to filenames using Unicode NFKD normalization and ord() substitution without separators, creating key collisions. When FileStore is used as response-cache backend, an unauthenticated remote attacker can trigger cache key collisions via crafted paths, causing one URL to serve cached responses of another (cache poisoning/mixup). This vulnerability is fixed in 2.20.0.

Frequently asked questions

What is CVE-2026-25480?: Litestar is an Asynchronous Server Gateway Interface (ASGI) framework. Prior to 2.20.0, FileStore maps cache keys to filenames using Unicode NFKD normalization and ord() substitution without separators, creating key collisions. When FileStore is used as response-cache backend, an unauthenticated remote attacker can trigger cache key collisions via crafted paths, causing one URL to serve cached responses of another (cache poisoning/mixup). This vulnerability is fixed in 2.20.0.
How severe is CVE-2026-25480?: CVE-2026-25480 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-25480 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-25480?: CVE-2026-25480 affects Litestar. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-25480?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-25480 have an EU (EUVD) identifier?: Yes. CVE-2026-25480 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-6498.
When was CVE-2026-25480 published?: CVE-2026-25480 was published on 2026-02-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:litestar:litestar:*:*:*:*:*:*:*:*

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