CVE-2022-23553Public exploitNetwork attack vector

Unauthenticated file disclosure via noncanonical URL matching

Published Dec 28, 2022 · Updated Apr 10, 2025

Incorrect authorization in Steve Springett Alpine before 1.10.4 allows remote attackers to read protected files via crafted URLs. BlacklistUrlFilter and WhitelistUrlFilter apply startsWith comparisons to raw request URIs before the servlet container canonicalizes semicolon traversal segments. Exposure requires an application to deploy either filter around protected resources; executable WAR packaging can expose application source code.

CVSS severity8.7
High
EPSS probability0.84%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Incorrect authorization in Steve Springett Alpine before 1.10.4 allows remote attackers to read protected files via crafted URLs. BlacklistUrlFilter and WhitelistUrlFilter apply startsWith comparisons to raw request URIs before the servlet container canonicalizes semicolon traversal segments. Exposure requires an application to deploy either filter around protected resources; executable WAR packaging can expose application source code.

The record

CVE
CVE-2022-23553
Published
Dec 28, 2022
Updated
Apr 10, 2025
Vendor
Steve Springett
Product
Alpine
Classifications
CWE-863, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 28, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 10, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.10.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Steve Springett · Alpineversion=< 1.10.4

Published CVSS scores

7.5GitHub CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
8.7GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo