litestar-org litestar up to 2.19.x ord unicode encoding

CVSS Meta Temp Score
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CTI Interest Score
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6.8$0-$5k0.00

Summaryinfo

A vulnerability was found in litestar-org litestar up to 2.19.x. It has been declared as critical. The impacted element is the function ord. Executing a manipulation can lead to improper handling of unicode encoding. This vulnerability is tracked as CVE-2026-25480. The attack can be launched remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in litestar-org litestar up to 2.19.x. It has been declared as critical. This vulnerability affects the function ord. The manipulation with an unknown input leads to a improper handling of unicode encoding vulnerability. The CWE definition for the vulnerability is CWE-176. The product does not properly handle when an input contains Unicode encoding. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability was named CVE-2026-25480 since 02/02/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit.

Upgrading to version 2.20.0 eliminates this vulnerability.

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Productinfo

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.9
VulDB Meta Temp Score: 6.8

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.5
CNA Vector (GitHub_M): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper handling of unicode encoding
CWE: CWE-176 / CWE-172
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: litestar 2.20.0

Timelineinfo

02/02/2026 CVE reserved
02/09/2026 +7 days Advisory disclosed
02/09/2026 +0 days VulDB entry created
02/18/2026 +9 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-25480 (🔒)
GCVE (CVE): GCVE-0-2026-25480
GCVE (VulDB): GCVE-100-345022

Entryinfo

Created: 02/09/2026 21:24
Updated: 02/18/2026 02:23
Changes: 02/09/2026 21:24 (63), 02/18/2026 02:23 (1)
Complete: 🔍
Cache ID: 216::103

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