CVE-2023-22367: Ichiran App for iOS versions prior to 3.1.0 and Ichiran App for Android versions prior to 3.1.0 improperly ver

Q: How do I fix CVE-2023-22367?

ichiran: upgrade to 3.1.0; ichiran: upgrade to 3.1.0. Exact commands for each OS are on this page.

Q: Is CVE-2023-22367 being exploited?

CVE-2023-22367 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-22367 affect?

CVE-2023-22367 affects ichiran, ichiran. Severity is medium (CVSS 5.9). Ichiran App for iOS versions prior to 3.1.0 and Ichiran App for Android versions prior to 3.1.0 improperly verify server certificates, which may allow a remote unauthenticated attacker to eavesdrop on an encrypted communication via a man-in

Q: How urgent is CVE-2023-22367?

Priority 37/100. Remotely exploitable, no login, no user action

Routine

MEDIUM 5.9REMOTEUPGRADEUPGRADE

CVE-2023-22367 is a medium-severity flaw (CVSS 5.9) affecting ichiran, ichiran. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Ichiran App for iOS versions prior to 3.1.0 and Ichiran App for Android versions prior to 3.1.0 improperly verify server certificates, which may allow a remote unauthenticated attacker to eavesdrop on an encrypted communication via a man-in-the-middle attack.

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.9 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 56%)
CISA exploited list	No
Weakness	CWE-295
Published	2023-02-13
Last modified	2026-06-17

Publisher (CNA): JPCERT/CC · Vendor: ichiranusa

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

Am I affected?

Timeline

2023-02-13 02:21 UTCPublished CVE record published
2026-06-17 05:35 UTCUpdated Record last modified

ichiranusa ichiran UPGRADE

Affected: < 3.1.0

Fixed in: 3.1.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 3.1.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ichiran

Note

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

ichiranusa ichiran UPGRADE

Affected: < 3.1.0

Fixed in: 3.1.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 3.1.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ichiran

Note

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

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-2023-22367?

ichiran: upgrade to 3.1.0; ichiran: upgrade to 3.1.0. Exact commands for each OS are on this page.

Is CVE-2023-22367 being exploited?

CVE-2023-22367 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-2023-22367 affect?

CVE-2023-22367 affects ichiran, ichiran. Severity is medium (CVSS 5.9). Ichiran App for iOS versions prior to 3.1.0 and Ichiran App for Android versions prior to 3.1.0 improperly verify server certificates, which may allow a remote unauthenticated attacker to eavesdrop on an encrypted communication via a man-in

How urgent is CVE-2023-22367?

Priority 37/100. Remotely exploitable, no login, no user action

Software pages

Android vulnerabilities · iOS vulnerabilities

References

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