CVE-2023-26818: Telegram 9.3.1 and 9.4.0 allows attackers to access restricted files, microphone ,or video recording via the D

Routine

MEDIUM 5.5DOWNGRADE

CVE-2023-26818 is a medium-severity flaw (CVSS 5.5) affecting telegram. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Telegram 9.3.1 and 9.4.0 allows attackers to access restricted files, microphone ,or video recording via the DYLD_INSERT_LIBRARIES flag.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.5% (top 56%)
CISA exploited list	No
Weakness	CWE-863
Published	2023-05-19
Last modified	2026-07-09

Publisher (CNA): MITRE · Vendor: telegram

Last updated 2026-07-09 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-05-19 12:15 UTCPublished CVE record published
2026-07-09 01:18 UTCUpdated Record last modified

telegram telegram DOWNGRADE

Affected: 9.3.1 · 9.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 9.3.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 9.3.1 (Debian / Ubuntu)

apt-cache madison telegram sudo apt install telegram=<VERSION_BEFORE_9.3.1> sudo apt-mark hold telegram

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

dnf --showduplicates list telegram sudo dnf downgrade telegram-<VERSION_BEFORE_9.3.1> sudo dnf versionlock add telegram

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-2023-26818?

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

Is CVE-2023-26818 being exploited?

CVE-2023-26818 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-2023-26818 affect?

CVE-2023-26818 affects telegram. Severity is medium (CVSS 5.5). Telegram 9.3.1 and 9.4.0 allows attackers to access restricted files, microphone ,or video recording via the DYLD_INSERT_LIBRARIES flag.

How urgent is CVE-2023-26818?

Priority 35/100. Public exploit reference

Software pages

Telegram vulnerabilities

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References

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