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    4 vulnerabilities found for Telegram Desktop by Telegram

    CVE-2026-94488 (GCVE-0-2026-94488)

    Vulnerability from nvd – Published: 2026-09-21 17:29 – Updated: 2026-09-21 17:51
    VLAI
    Summary
    Telegram Desktop before 6.9.4 allows XSS in the HTML exporter. (The first fixed stable version is 7.0.1.) This occurs in button.text.toUtf8 in export_output_html.cpp. Exploitation cannot occur unless HTML export was used by a victim. However, the exploit payload can be exported if a message were forwarded into a group by a member (it is not necessary for the message author to be a member of a group).
    Severity
    8.3 (High)
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
    8.2 (High)
    CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
    SSVC
    Exploitation: poc Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-21 17:51 UTC
    CWE
    • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
    Assigner
    References
    Impacted products
    Vendor Product Version
    Telegram Telegram Desktop Affected: 4.15.1 , < 6.9.4 (semver)
        cpe:2.3:a:telegram:telegram_desktop:*:*:*:*:*:*:*:*
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2021-47793 (GCVE-0-2021-47793)

    Vulnerability from nvd – Published: 2026-01-15 23:25 – Updated: 2026-03-05 01:28
    VLAI
    Title
    Telegram Desktop 2.9.2 - Denial of Service (PoC)
    Summary
    Telegram Desktop 2.9.2 contains a denial of service vulnerability that allows attackers to crash the application by sending an oversized message payload. Attackers can generate a 9 million byte buffer and paste it into the messaging interface to trigger an application crash.
    Severity
    4.6 (Medium)
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
    7.5 (High)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    SSVC
    Exploitation: poc Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-01-16 15:52 UTC
    CWE
    • CWE-770 - Allocation of Resources Without Limits or Throttling
    Assigner
    References
    Impacted products
    Vendor Product Version
    Telegram Telegram Desktop Affected: 2.9.2
        cpe:2.3:a:telegram:telegram_desktop:2.9.2:*:*:*:*:*:*:*
    		Create a notification for this product.
    Date Public
    2021-08-30 00:00
    Credits
    Aryan Chehreghani
    Show details on NVD website
    To clipboard 

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    CVE-2026-94488 (GCVE-0-2026-94488)

    Vulnerability from cvelistv5 – Published: 2026-09-21 17:29 – Updated: 2026-09-21 17:51
    VLAI
    Summary
    Telegram Desktop before 6.9.4 allows XSS in the HTML exporter. (The first fixed stable version is 7.0.1.) This occurs in button.text.toUtf8 in export_output_html.cpp. Exploitation cannot occur unless HTML export was used by a victim. However, the exploit payload can be exported if a message were forwarded into a group by a member (it is not necessary for the message author to be a member of a group).
    Severity
    8.3 (High)
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
    8.2 (High)
    CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
    SSVC
    Exploitation: poc Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-21 17:51 UTC
    CWE
    • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
    Assigner
    References
    Impacted products
    Vendor Product Version
    Telegram Telegram Desktop Affected: 4.15.1 , < 6.9.4 (semver)
        cpe:2.3:a:telegram:telegram_desktop:*:*:*:*:*:*:*:*
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2021-47793 (GCVE-0-2021-47793)

    Vulnerability from cvelistv5 – Published: 2026-01-15 23:25 – Updated: 2026-03-05 01:28
    VLAI
    Title
    Telegram Desktop 2.9.2 - Denial of Service (PoC)
    Summary
    Telegram Desktop 2.9.2 contains a denial of service vulnerability that allows attackers to crash the application by sending an oversized message payload. Attackers can generate a 9 million byte buffer and paste it into the messaging interface to trigger an application crash.
    Severity
    4.6 (Medium)
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
    7.5 (High)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    SSVC
    Exploitation: poc Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-01-16 15:52 UTC
    CWE
    • CWE-770 - Allocation of Resources Without Limits or Throttling
    Assigner
    References
    Impacted products
    Vendor Product Version
    Telegram Telegram Desktop Affected: 2.9.2
        cpe:2.3:a:telegram:telegram_desktop:2.9.2:*:*:*:*:*:*:*
    		Create a notification for this product.
    Date Public
    2021-08-30 00:00
    Credits
    Aryan Chehreghani
    Show details on NVD website
    To clipboard 

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