CVE-2023-41327: WireMock is a tool for mocking HTTP services

Routine

MEDIUM 4.6UPGRADEUPGRADE

CVE-2023-41327 is a medium-severity flaw (CVSS 4.6) affecting studio, wiremock. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

WireMock is a tool for mocking HTTP services. WireMock can be configured to only permit proxying (and therefore recording) to certain addresses. This is achieved via a list of allowed address rules and a list of denied address rules, where the allowed list is evaluated first. Until WireMock Webhooks Extension 3.0.0-beta-15, the filtering of target addresses from the proxy mode DID NOT work for Webhooks, so the users were potentially vulnerable

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.6 (Medium)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.5% (top 57%)
CISA exploited list	No
Weakness	CWE-918
Published	2023-09-06
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: wiremock

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-09-06 21:15 UTCPublished CVE record published
2026-06-17 06:21 UTCUpdated Record last modified

wiremock studio UPGRADE

Affected: <= 2.32.0-17

Fixed in: newer than 2.32.0-17

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy studio || rpm -q studio || studio --version

2. UPGRADE to newer than 2.32.0-17 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade studio

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade studio

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

wiremock wiremock UPGRADE

Affected: >= 2.0.0 and < 2.35.1 · >= 3.0.0 and < 3.0.3

Fixed in: 2.35.1, 3.0.3

Safe to downgrade to: a release before 2.0.0

1. Check installed version

apt-cache policy wiremock || rpm -q wiremock || wiremock --version

2. UPGRADE to 2.35.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade wiremock

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade wiremock

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 2.0.0 (Debian / Ubuntu)

apt-cache madison wiremock sudo apt install wiremock=<VERSION_BEFORE_2.0.0> sudo apt-mark hold wiremock

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list wiremock sudo dnf downgrade wiremock-<VERSION_BEFORE_2.0.0> sudo dnf versionlock add wiremock

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-41327?

studio: upgrade to newer than 2.32.0-17; wiremock: upgrade to 2.35.1, 3.0.3. Exact commands for each OS are on this page.

Is CVE-2023-41327 being exploited?

CVE-2023-41327 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-41327 affect?

CVE-2023-41327 affects studio, wiremock. Severity is medium (CVSS 4.6). WireMock is a tool for mocking HTTP services. WireMock can be configured to only permit proxying (and therefore recording) to certain addresses. This is achieved via a list of allowed address rules and a list of denied address rules, where

How urgent is CVE-2023-41327?

Priority 27/100. No elevated risk signals yet.

Related CVEs

CVE-2023-41329 LOW 3.9 UPGRADE UPGRADE WireMock is a tool for mocking HTTP services
CVE-2023-39967 CRITICAL 10.0 UPGRADE WireMock is a tool for mocking HTTP services
CVE-2023-38335 MEDIUM 5.3 DOWNGRADE Omnis Studio 10.22.00 has incorrect access control
CVE-2023-38334 MEDIUM 6.5 DOWNGRADE Omnis Studio 10.22.00 has incorrect access control
CVE-2018-25227 MEDIUM 6.2 UPGRADE Valentina Studio 9.0.4 contains a denial of service vulnerability that allows local attackers to crash the app

References

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