CVE-2023-28686: Dino before 0.2.3, 0.3.x before 0.3.2, and 0.4.x before 0.4.2 allows attackers to modify the personal bookmark

This month

HIGH 7.1WATCHLISTUPGRADEMITIGATEMITIGATE

CVE-2023-28686 is a high-severity flaw (CVSS 7.1) affecting dino, fedora, debian linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Dino before 0.2.3, 0.3.x before 0.3.2, and 0.4.x before 0.4.2 allows attackers to modify the personal bookmark store via a crafted message. The attacker can change the display of group chats or force a victim to join a group chat; the victim may then be tricked into disclosing sensitive information.

Why this priority

High severity
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.7% (top 47%)
CISA exploited list	No
Weakness	CWE-639
Published	2023-03-24
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: debian · dino · fedoraproject

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

Am I affected?

Timeline

2023-03-24 04:15 UTCPublished CVE record published
2026-06-17 05:48 UTCUpdated Record last modified

dino dino UPGRADE

Affected: < 0.2.3 · >= 0.3.0 and < 0.3.2 · >= 0.4.0 and < 0.4.2

Fixed in: 0.2.3, 0.3.2, 0.4.2

Safe to downgrade to: a release before 0.3.0

1. Check installed version

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

2. UPGRADE to 0.2.3 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade dino

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 0.3.0 (Debian / Ubuntu)

apt-cache madison dino sudo apt install dino=<VERSION_BEFORE_0.3.0> sudo apt-mark hold dino

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

dnf --showduplicates list dino sudo dnf downgrade dino-<VERSION_BEFORE_0.3.0> sudo dnf versionlock add dino

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.

fedoraproject fedora MITIGATE

Affected: 36 · 37 · 38

Fixed in: no fixed release known

Safe to downgrade to: a release before 36

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

debian debian linux MITIGATE

Affected: 10.0 · 11.0 · 12.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 10.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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-2023-28686?

dino: upgrade to 0.2.3, 0.3.2, 0.4.2; fedora: mitigate or apply the listed mitigation; debian linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-28686 being exploited?

CVE-2023-28686 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-2023-28686 affect?

CVE-2023-28686 affects dino, fedora, debian linux. Severity is high (CVSS 7.1). Dino before 0.2.3, 0.3.x before 0.3.2, and 0.4.x before 0.4.2 allows attackers to modify the personal bookmark store via a crafted message. The attacker can change the display of group chats or force a victim to join a group chat; the victi

How urgent is CVE-2023-28686?

Priority 43/100. High severity; On your watchlist

Software pages

Debian vulnerabilities

References

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