CVE-2023-26578: Arbitrary file upload to web root in the IDAttend’s IDWeb application 3.1.013 allows authenticated attackers t

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HIGH 8.8DOWNGRADE

CVE-2023-26578 is a high-severity flaw (CVSS 8.8) affecting idweb. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Arbitrary file upload to web root in the IDAttend’s IDWeb application 3.1.013 allows authenticated attackers to upload dangerous files to web root such as ASP or ASPX, gaining command execution on the affected server.

Why this priority

High severity

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

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.6% (top 24%)
CISA exploited list	No
Weakness	CWE-22, CWE-434
Published	2023-10-25
Last modified	2026-06-17

Publisher (CNA): The Missing Link Australia (TML) · Vendor: idattend

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-10-25 18:17 UTCPublished CVE record published
2026-06-17 05:43 UTCUpdated Record last modified

idattend idweb DOWNGRADE

Affected: 3.1.013

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.1.013

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3.1.013 (Debian / Ubuntu)

apt-cache madison idweb sudo apt install idweb=<VERSION_BEFORE_3.1.013> sudo apt-mark hold idweb

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

dnf --showduplicates list idweb sudo dnf downgrade idweb-<VERSION_BEFORE_3.1.013> sudo dnf versionlock add idweb

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-2023-26578?

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

Is CVE-2023-26578 being exploited?

CVE-2023-26578 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-2023-26578 affect?

CVE-2023-26578 affects idweb. Severity is high (CVSS 8.8). Arbitrary file upload to web root in the IDAttend’s IDWeb application 3.1.013 allows authenticated attackers to upload dangerous files to web root such as ASP or ASPX, gaining command execution on the affected server.

How urgent is CVE-2023-26578?

Priority 50/100. High severity

Related CVEs

CVE-2023-27377 HIGH 7.5 UPGRADE Missing authentication in the StudentPopupDetails_EmergencyContactDetails method in IDAttend’s IDWeb ap
CVE-2023-27376 HIGH 7.5 UPGRADE Missing authentication in the StudentPopupDetails_StudentDetails method in IDAttend’s IDWeb application
CVE-2023-27375 HIGH 7.5 UPGRADE Missing authentication in the StudentPopupDetails_ContactDetails method in IDAttend’s IDWeb application
CVE-2023-27262 CRITICAL 9.8 UPGRADE Unauthenticated SQL injection in the GetAssignmentsDue method in IDAttend’s IDWeb application 3.1.052 a
CVE-2023-27261 MEDIUM 5.3 UPGRADE Missing authentication in the DeleteAssignments method in IDAttend’s IDWeb application 3.1.052 and ear

References

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