CVE-2020-24904: An issue was discovered in attach parameter in GNOME Gmail version 2.5.4, allows remote attackers to gain sens

This month

MEDIUM 6.5DOWNGRADE

CVE-2020-24904 is a medium-severity flaw (CVSS 6.5) affecting gnome-gmail. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in attach parameter in GNOME Gmail version 2.5.4, allows remote attackers to gain sensitive information via crafted "mailto" link.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.8% (top 42%)
CISA exploited list	No
Published	2023-08-11
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: davesteele

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

Am I affected?

Timeline

2023-08-11 14:15 UTCPublished CVE record published
2026-06-17 03:06 UTCUpdated Record last modified

davesteele gnome-gmail DOWNGRADE

Affected: 2.5.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.5.4

1. Check installed version

apt-cache policy gnome-gmail || rpm -q gnome-gmail || gnome-gmail --version

2. No fixed release: DOWNGRADE to a release before 2.5.4 (Debian / Ubuntu)

apt-cache madison gnome-gmail sudo apt install gnome-gmail=<VERSION_BEFORE_2.5.4> sudo apt-mark hold gnome-gmail

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list gnome-gmail sudo dnf downgrade gnome-gmail-<VERSION_BEFORE_2.5.4> sudo dnf versionlock add gnome-gmail

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-2020-24904?

gnome-gmail: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-24904 being exploited?

CVE-2020-24904 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-2020-24904 affect?

CVE-2020-24904 affects gnome-gmail. Severity is medium (CVSS 6.5). An issue was discovered in attach parameter in GNOME Gmail version 2.5.4, allows remote attackers to gain sensitive information via crafted "mailto" link.

How urgent is CVE-2020-24904?

Priority 42/100. Public exploit reference

Software pages

Google Workspace vulnerabilities

References

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