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CVE-2024-45203: Improper authorization in handler for custom URL scheme issue in "@cosme" App for Android versions prior 5.69.

21
Routine
MEDIUM 4.3UPGRADEUPGRADE

CVE-2024-45203 is a medium-severity flaw (CVSS 4.3) affecting \@cosme, \@cosme. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper authorization in handler for custom URL scheme issue in "@cosme" App for Android versions prior 5.69.0 and "@cosme" App for iOS versions prior to 6.74.0 allows an attacker to lead a user to access an arbitrary website via the vulnerable App. As a result, the user may become a victim of a phishing attack.

Why this priority

  • No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score4.3 (Medium)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionRequired
EPSS exploit chance0.3% (top 78%)
CISA exploited listNo
WeaknessCWE-939
Published2024-09-09
Last modified2026-06-17
Publisher (CNA): JPCERT/CC · Vendor: istyle

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

Am I affected?

Timeline

istyle \@cosme UPGRADE
Affected: < 5.69.0
Fixed in: 5.69.0
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy cosme || rpm -q cosme || cosme --version
2. UPGRADE to 5.69.0 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade cosme
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade cosme
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
istyle \@cosme UPGRADE
Affected: <= 6.74.0
Fixed in: newer than 6.74.0
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy cosme || rpm -q cosme || cosme --version
2. UPGRADE to newer than 6.74.0 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade cosme
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade cosme
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-2024-45203?

\@cosme: upgrade to 5.69.0; \@cosme: upgrade to newer than 6.74.0. Exact commands for each OS are on this page.

Is CVE-2024-45203 being exploited?

CVE-2024-45203 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-2024-45203 affect?

CVE-2024-45203 affects \@cosme, \@cosme. Severity is medium (CVSS 4.3). Improper authorization in handler for custom URL scheme issue in "@cosme" App for Android versions prior 5.69.0 and "@cosme" App for iOS versions prior to 6.74.0 allows an attacker to lead a user to access an arbitrary website via the vulne

How urgent is CVE-2024-45203?

Priority 21/100. No elevated risk signals yet.

Software pages

Android vulnerabilities · iOS vulnerabilities

References

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