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CVE-2026-45731

WWBN AVideo: Authenticated Arbitrary File Read in view/update.php

6.9 Medium

WWBN AVideo is an open source video platform. In 29.0 and earlier, view/update.php reads $_POST['updateFile'] as a relative path under updatedb/ and passes it to PHP's file() for line-by-line execution as part of a database migration. An authenticated administrator can abuse this to read arbitrary text files reachable from the web-server process.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
High
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
None
Availability
None

Exploit likelihood

0.47%Up 0.4 points since May 30, 2026
90%50%10%1%

What each source reports

CVE List Score used 6.9

WWBN AVideo: Authenticated Arbitrary File Read in view/update.php

WWBN AVideo is an open source video platform. In 29.0 and earlier, view/update.php reads $_POST['updateFile'] as a relative path under updatedb/ and passes it to PHP's file() for line-by-line execution as part of a database migration. An authenticated administrator can abuse this to read arbitrary text files reachable from the web-server process.

Record
CVE-2026-45731
CVSS 4.0
6.9 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Weakness
CWE-22
Updated
2026-11-02
EUVDEUVD-2026-33306 6.9

WWBN AVideo is an open source video platform. In 29.0 and earlier, view/update.php reads $_POST['updateFile'] as a relative path under updatedb/ and passes it to PHP's file() for line-by-line execution as part of a database migration. An authenticated administrator can abuse this to read arbitrary text files reachable from the web-server process.

Record
EUVD-2026-33306
CVSS 4.0
6.9 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-3mjv-375j-6h92 6.9

AVideo: Authenticated Arbitrary File Read in view/update.php

Summary

view/update.php reads $_POST['updateFile'] as a relative path under updatedb/ and passes it to PHP's file() for line-by-line execution as part of a database migration. An authenticated administrator can abuse this to read arbitrary text files reachable from the web-server process — especially valuable on misconfigured deployments where /etc/passwd, .env, or other sibling-app configs are reachable relative to the AVideo directory.

Details

view/update.php, lines 134-145 (excerpt):

if (!empty($_POST['updateFile'])) { $dir = Video::getStoragePath() . "cache"; rrmdir($dir); /* …unrelated cache-clear… */

if (file_exists($logfile . "log")) {
    unlink($logfile . "log");
    // ...
}
$lines = file("{$global['systemRootPath']}updatedb/{$_POST['updateFile']}");

The User::isAdmin() and adminSecurityCheck(true) guards at lines 12-15 enforce admin auth, but $_POST['updateFile'] is concatenated into a path without any sanitization. file() returns the file's contents as an array of lines; the script subsequently iterates them and echoes the SQL it would run.

PoC

POST /view/update.php Content-Type: application/x-www-form-urlencoded

updateFile=../../../../etc/passwd Result: the script attempts to load /etc/passwd (relative to {systemRootPath}updatedb/), echoing each line in the migration-runner HTML output. $_POST['updateFile'] traversal accepted, no extension guard, no in-array whitelist.

Attempting ../../../../proc/self/environ similarly reveals web-server environment variables on Linux.

Impact

Verified on the current master branch of WWBN/AVideo (commit bc0340662…). Likely affected: every release where view/update.php contains the $_POST['updateFile'] consumer — pattern predates 2024.

Record
GHSA-3mjv-375j-6h92
CVSS 4.0
6.9 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CVSS 3.1
4.9 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-22
Updated
2026-11-02
NVD 6.9

WWBN AVideo is an open source video platform. In 29.0 and earlier, view/update.php reads $_POST['updateFile'] as a relative path under updatedb/ and passes it to PHP's file() for line-by-line execution as part of a database migration. An authenticated administrator can abuse this to read arbitrary text files reachable from the web-server process.

Record
CVE-2026-45731
CVSS 4.0
6.9 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1
4.9 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-22
Updated
2026-11-02
OSV 6.9

WWBN AVideo: Authenticated Arbitrary File Read in view/update.php

WWBN AVideo is an open source video platform. In 29.0 and earlier, view/update.php reads $_POST['updateFile'] as a relative path under updatedb/ and passes it to PHP's file() for line-by-line execution as part of a database migration. An authenticated administrator can abuse this to read arbitrary text files reachable from the web-server process.

Record
CVE-2026-45731
CVSS 4.0
6.9 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Weakness
CWE-22
Updated
2026-11-02
OSVGHSA-3mjv-375j-6h92 6.9

AVideo: Authenticated Arbitrary File Read in view/update.php

Summary

view/update.php reads $_POST['updateFile'] as a relative path under updatedb/ and passes it to PHP's file() for line-by-line execution as part of a database migration. An authenticated administrator can abuse this to read arbitrary text files reachable from the web-server process — especially valuable on misconfigured deployments where /etc/passwd, .env, or other sibling-app configs are reachable relative to the AVideo directory.

Details

view/update.php, lines 134-145 (excerpt):

if (!empty($_POST['updateFile'])) { $dir = Video::getStoragePath() . "cache"; rrmdir($dir); /* …unrelated cache-clear… */

if (file_exists($logfile . "log")) {
    unlink($logfile . "log");
    // ...
}
$lines = file("{$global['systemRootPath']}updatedb/{$_POST['updateFile']}");

The User::isAdmin() and adminSecurityCheck(true) guards at lines 12-15 enforce admin auth, but $_POST['updateFile'] is concatenated into a path without any sanitization. file() returns the file's contents as an array of lines; the script subsequently iterates them and echoes the SQL it would run.

PoC

POST /view/update.php Content-Type: application/x-www-form-urlencoded

updateFile=../../../../etc/passwd Result: the script attempts to load /etc/passwd (relative to {systemRootPath}updatedb/), echoing each line in the migration-runner HTML output. $_POST['updateFile'] traversal accepted, no extension guard, no in-array whitelist.

Attempting ../../../../proc/self/environ similarly reveals web-server environment variables on Linux.

Impact

Verified on the current master branch of WWBN/AVideo (commit bc0340662…). Likely affected: every release where view/update.php contains the $_POST['updateFile'] consumer — pattern predates 2024.

Record
GHSA-3mjv-375j-6h92
CVSS 4.0
6.9 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CVSS 3.1
4.9 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-22
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
WWBN/AVideo
Packagist
 through 29.0 None known

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-45731 is a medium vulnerability (CVSS 6.9) in Wwbn Avideo, published May 18, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.47%, the 41st percentile. No source names a fixed version.

References

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