Stored script execution via guestbook message content
Published May 12, 2021 · Updated Aug 4, 2024
Stored cross-site scripting in the Dhcms 2017-09-18 guestbook allows remote attackers to execute script through a message-board post. The guestbook submission route accepts a script-bearing content value, and the guestbook page renders that stored value as active markup instead of inert text. No account is shown as required to submit the payload, but a viewer must open the guestbook page; the script then runs in that viewer’s browser context.
Summary
What happened
Stored cross-site scripting in the Dhcms 2017-09-18 guestbook allows remote attackers to execute script through a message-board post. The guestbook submission route accepts a script-bearing content value, and the guestbook page renders that stored value as active markup instead of inert text. No account is shown as required to submit the payload, but a viewer must open the guestbook page; the script then runs in that viewer’s browser context.
The record
- CVE
- CVE-2020-19274
- Published
- May 12, 2021
- Updated
- Aug 4, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-79, T1059.007
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 12, 2021CVE publishedPublication date reported by the CVE source.
- Aug 4, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What is affected?
Affected products and versions are unavailable in this record.
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.
Weakness, pattern, technique
Public exploit references
- Dhcms guestbook stored-XSS proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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