CVE-2023-26577: Stored cross-site scripting in the IDAttend’s IDWeb application 3.1.052 and earlier allows attackers to hijack

Q: How do I fix CVE-2023-26577?

idweb: upgrade to newer than 3.1.052. Exact commands for each OS are on this page.

Q: Is CVE-2023-26577 being exploited?

CVE-2023-26577 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-26577 affect?

CVE-2023-26577 affects idweb. Severity is high (CVSS 7.5). Stored cross-site scripting in the IDAttend’s IDWeb application 3.1.052 and earlier allows attackers to hijack the browsing session of the logged in user.

Q: How urgent is CVE-2023-26577?

Priority 42/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 7.5REMOTEUPGRADE

CVE-2023-26577 is a high-severity flaw (CVSS 7.5) affecting idweb. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Stored cross-site scripting in the IDAttend’s IDWeb application 3.1.052 and earlier allows attackers to hijack the browsing session of the logged in user.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 57%)
CISA exploited list	No
Weakness	CWE-79
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 UPGRADE

Affected: <= 3.1.052

Fixed in: newer than 3.1.052

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 3.1.052 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade idweb

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade idweb

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2023-26577?

idweb: upgrade to newer than 3.1.052. Exact commands for each OS are on this page.

Is CVE-2023-26577 being exploited?

CVE-2023-26577 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-2023-26577 affect?

CVE-2023-26577 affects idweb. Severity is high (CVSS 7.5). Stored cross-site scripting in the IDAttend’s IDWeb application 3.1.052 and earlier allows attackers to hijack the browsing session of the logged in user.

How urgent is CVE-2023-26577?

Priority 42/100. High severity; Remotely exploitable, no login, no user action

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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