vulnerability / NVI-00004556 / Revision 2
EGroupware Vulnerable to Local File Inclusion via file:// URI in Mail Compose
GitHub lists this reviewed advisory for egroupware/egroupware, egroupware/egroupware. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.
This report has not inspected your inventory, configuration, deployed build, reachability or evidence. A catalog listing and a severity score do not establish exposure or compromise.
01 / Meaning
Why it matters
Published affected context helps an owner decide what evidence to gather. This report has not examined your application.
6.5 medium
GitHub source severity; exploitability and local consequence require separate evidence.
As of · GitHub Advisory Database
02 / Applicability
The affected context
Affected versions, configuration prerequisites and known exclusions are public. Confirm each one against the deployed service.
egroupware/egroupware
source listed>= 26.0.20251208, < 26.5.20260507
### Summary The function processes image URLs embedded in an HTML email body without validating or restricting URI schemes. The check `!str_starts_with($myUrl, 'http')` evaluates to true for `file://` URIs, causing `file_get_contents($basedir . urldecode($myUrl))` to read arbitrary files from the server filesystem and embed them as inline MIME attachments in outgoing email. str_starts_with('file:///etc/passwd', 'http') → **false** !false → **true** ```php // api/src/Mail.php foreach($images[2] as $i => $url) { //$isData = false; $basedir = $data = ''; $needTempFile = true; $attachmentData = ['name' => '', 'type' => '', 'file' => '', 'tmp_name' => '']; try { // do not change urls for absolute images (thanks to corvuscorax) if (!str_starts_with($url, 'data:')) { $attachmentData['name'] = basename($url); // need to resolve all sort of url if (($directory = dirname($url)) == '.') $directory = ''; $ext = pathinfo($attachmentData['name'], PATHINFO_EXTENSION); $attachmentData['type'] = MimeMagic::ext2mime($ext); if ( strlen($directory) > 1 && !str_ends_with($directory, '/')) { $directory .= '/'; } .. ... .... //
egroupware/egroupware
source listed< 23.1.20260601
### Summary The function processes image URLs embedded in an HTML email body without validating or restricting URI schemes. The check `!str_starts_with($myUrl, 'http')` evaluates to true for `file://` URIs, causing `file_get_contents($basedir . urldecode($myUrl))` to read arbitrary files from the server filesystem and embed them as inline MIME attachments in outgoing email. str_starts_with('file:///etc/passwd', 'http') → **false** !false → **true** ```php // api/src/Mail.php foreach($images[2] as $i => $url) { //$isData = false; $basedir = $data = ''; $needTempFile = true; $attachmentData = ['name' => '', 'type' => '', 'file' => '', 'tmp_name' => '']; try { // do not change urls for absolute images (thanks to corvuscorax) if (!str_starts_with($url, 'data:')) { $attachmentData['name'] = basename($url); // need to resolve all sort of url if (($directory = dirname($url)) == '.') $directory = ''; $ext = pathinfo($attachmentData['name'], PATHINFO_EXTENSION); $attachmentData['type'] = MimeMagic::ext2mime($ext); if ( strlen($directory) > 1 && !str_ends_with($directory, '/')) { $directory .= '/'; } .. ... .... //
egroupware/egroupware
source listedECOSYSTEM: introduced 26.0.20251208; fixed 26.5.20260507
### Summary The function processes image URLs embedded in an HTML email body without validating or restricting URI schemes. The check `!str_starts_with($myUrl, 'http')` evaluates to true for `file://` URIs, causing `file_get_contents($basedir . urldecode($myUrl))` to read arbitrary files from the server filesystem and embed them as inline MIME attachments in outgoing email. str_starts_with('file:///etc/passwd', 'http') → **false** !false → **true** ```php // api/src/Mail.php foreach($images[2] as $i => $url) { //$isData = false; $basedir = $data = ''; $needTempFile = true; $attachmentData = ['name' => '', 'type' => '', 'file' => '', 'tmp_name' => '']; try { // do not change urls for absolute images (thanks to corvuscorax) if (!str_starts_with($url, 'data:')) { $attachmentData['name'] = basename($url); // need to resolve all sort of url if (($directory = dirname($url)) == '.') $directory = ''; $ext = pathinfo($attachmentData['name'], PATHINFO_EXTENSION); $attachmentData['type'] = MimeMagic::ext2mime($ext); if ( strlen($directory) > 1 && !str_ends_with($directory, '/')) { $directory .= '/'; } .. ... .... //
egroupware/egroupware
source listedECOSYSTEM: introduced 0; fixed 23.1.20260601
### Summary The function processes image URLs embedded in an HTML email body without validating or restricting URI schemes. The check `!str_starts_with($myUrl, 'http')` evaluates to true for `file://` URIs, causing `file_get_contents($basedir . urldecode($myUrl))` to read arbitrary files from the server filesystem and embed them as inline MIME attachments in outgoing email. str_starts_with('file:///etc/passwd', 'http') → **false** !false → **true** ```php // api/src/Mail.php foreach($images[2] as $i => $url) { //$isData = false; $basedir = $data = ''; $needTempFile = true; $attachmentData = ['name' => '', 'type' => '', 'file' => '', 'tmp_name' => '']; try { // do not change urls for absolute images (thanks to corvuscorax) if (!str_starts_with($url, 'data:')) { $attachmentData['name'] = basename($url); // need to resolve all sort of url if (($directory = dirname($url)) == '.') $directory = ''; $ext = pathinfo($attachmentData['name'], PATHINFO_EXTENSION); $attachmentData['type'] = MimeMagic::ext2mime($ext); if ( strlen($directory) > 1 && !str_ends_with($directory, '/')) { $directory .= '/'; } .. ... .... //
03 / Response
What to do next
- investigate
Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.
Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system. GitHub Advisory Database
- vendor patch
The original advisory lists fixed boundaries 26.5.20260507 for egroupware/egroupware. Confirm the publisher’s latest guidance.
Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system. GitHub Advisory Database via OSV
- vendor patch
The original advisory lists fixed boundaries 23.1.20260601 for egroupware/egroupware. Confirm the publisher’s latest guidance.
Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system. GitHub Advisory Database via OSV
A fixed release is not deployment evidence.
Check current vendor support and compatibility. After making a change, verify the deployed build and relevant runtime conditions. Keep the evidence, owner and time. An updated lockfile alone does not prove what is running.
04 / Limits
What this report cannot establish
- Customer inventory, deployment, reachability and exploitation have not been inspected.
05 / Provenance
Sources you can inspect
Each assertion retains its source. Mirrored records may repeat one underlying publisher; additional links are not independent corroboration.
- GHSA-c8m7-r2jv-rw63 ↗
GitHub Advisory Database · vendor advisory
Observed . GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.
- GHSA-c8m7-r2jv-rw63 ↗
GitHub Advisory Database via OSV · vendor advisory
Observed . GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.
Public revision history
Only published revisions appear here. Routine fetches do not create a material-change event.
- Revision 2 ·
Source facts changed; compare the preserved prior revision.
- Revision 1 ·
First indexed by Null; source disclosure date is shown separately.