A flaw was found in evolution-data-server. Calendar events containing a file:// URI in their ATTACH property automatically read the targeted local file, base64-encode its contents and upload it back to the server when the event is saved. There are no file path restrictions or checks to verify whether the attachment originally came from the server or was added locally. This allows an attacker with access to a shared CalDAV calendar to exfiltrate arbitrary files the user has access to when interacting with malicious calendar events.

The remote Fedora 45 host has packages installed that are affected by a vulnerability as referenced in the FEDORA-2026-cb44cadc9a advisory.

    Update to 3.62.1

    #### evolution-data-server

    Bug Fixes:

    * I#661 - OAuth2: Resolve collection as credential source on the token path (Tobias Mueller)
    * I#666 - OAuth2: Read the 'code' only from the redirect URI in the wizard
    * I#667 - LDAP: Support Jabber attribute (RFC 8284)
    * I#668 - CalDAV: Fails to populate local cache for iCloud servers
    * I#672 - Calendar: Limit which local files are inlined in components
    * M!249 - e-oauth2-service: Treat an empty refresh token as absent (Benjamin Herrenschmidt)
    * M!250 - Camel: Set a Content-Description on the S/MIME signature part (Mike C. Ward)
    * M!251 - test-camel-provider-imapx: Replace strcasestr() with camel_strstrcase() (Achill Gilgenast)
    * M!257 - Camel: Do not write an empty preamble for a new multipart/signed (Mike C. Ward)
    * M!257 - Camel: Encode tabs in quoted-printable text (Mike C. Ward)

    Miscellaneous:

    * LDAP: Avoid runtime warning on unrecognized known search query
    * test-camel-provider-imapx: Replace inet_addr() with inet_pton()
    * ESourceRegistry: Try harder with object manager thread's main context flush

    Translations:

    * Efstathios Iosifidis (el)
    * Patrik Sivek (cs)
    * Roy-Magne Mo (nn)

    #### evolution

    Bug Fixes:

    * eds-I#672 - Calendar: Limit which local files are inlined in components
    * M!244 - Composer: De-duplicate attachments in a mailto URI (Jaroslav Jindrak)

    Miscellaneous:

    * EWebView: Set CORS allow list on the WebKitWebView for known URI-s

    Translations:

    * Efstathios Iosifidis (el)
    * Roy-Magne Mo (nn)


    #### evolution-ews

    Bug Fixes:

    * M!20 - m365: Request a bounded page size for the events delta sync (David Woodhouse)

    Translations:

    * Efstathios Iosifidis (el)
    * Roy-Magne Mo (nn)


Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Fedora 44 host has packages installed that are affected by a vulnerability as referenced in the FEDORA-2026-df461d043b advisory.

    Backport upstream patches for CVE-2026-110777 (Calendar: Limit which local files are inlined in     components)

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A flaw was found in evolution-data-server. Calendar events containing a file:// URI in their ATTACH     property automatically read the targeted local file, base64-encode its contents and upload it back to the     server when the event is saved. There are no file path restrictions or checks to verify whether the     attachment originally came from the server or was added locally. This allows an attacker with access to a     shared CalDAV calendar to exfiltrate arbitrary files the user has access to when interacting with     malicious calendar events. (CVE-2026-110777)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
374636	Fedora 45 : evolution / evolution-data-server / evolution-ews (2026-cb44cadc9a)	Nessus	Fedora Local Security Checks	Local	medium
374453	Fedora 44 : evolution / evolution-data-server (2026-df461d043b)	Nessus	Fedora Local Security Checks	Local	medium
365942	Linux Distros Unpatched Vulnerability : CVE-2026-110777	Nessus	Misc.	Local	medium

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CVE-2026-110777

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