CVE-2024-22780Public exploitNetwork attack vector

Browser script execution via unescaped login error

Published Apr 2, 2024 · Updated Jul 9, 2026

Reflected XSS in CA17 TeamsACS 1.0.2 and earlier allows remote attackers to run scripts through the login errmsg parameter. The /login endpoint inserts the errmsg query value into the login page as HTML without neutralizing attacker-controlled tags. Exploitation requires no account but requires a victim to open a crafted URL, exposing browser-accessible data and actions to the injected script.

CVSS severity6.1
Medium
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in CA17 TeamsACS 1.0.2 and earlier allows remote attackers to run scripts through the login errmsg parameter. The /login endpoint inserts the errmsg query value into the login page as HTML without neutralizing attacker-controlled tags. Exploitation requires no account but requires a victim to open a crafted URL, exposing browser-accessible data and actions to the injected script.

The record

CVE
CVE-2024-22780
Published
Apr 2, 2024
Updated
Jul 9, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 2, 2024CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.1GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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