CVE-2025-55135Public exploitNetwork attack vector

Stored XSS via unrestricted SVG profile upload

Published Aug 7, 2025 · Updated Aug 8, 2025

Stored XSS in Agora fall23-Alpha1 before 690ce56 allows remote authenticated users to execute JavaScript through an SVG profile image. The uploadProfilePicture route saves profile images without validating file content, so an SVG payload reaches browser rendering. A valid account and a viewer opening the image URL are required; the script runs in the viewer's browser context and can read or alter accessible page data.

CVSS severity6.4
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Agora fall23-Alpha1 before 690ce56 allows remote authenticated users to execute JavaScript through an SVG profile image. The uploadProfilePicture route saves profile images without validating file content, so an SVG payload reaches browser rendering. A valid account and a viewer opening the image URL are required; the script runs in the viewer's browser context and can read or alter accessible page data.

The record

CVE
CVE-2025-55135
Published
Aug 7, 2025
Updated
Aug 8, 2025
Vendor
Agora Foundation
Product
Agora
Classifications
CWE-434, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 7, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 8, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <690ce56f254af01375b6033e53a80f14d7cc002e

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Agora Foundation · Agoraversion=0 <690ce56f254af01375b6033e53a80f14d7cc002e

Published CVSS scores

6.4MITRECVSS:3.1/AV:N/AC:L/PR:L/UI:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1059.007JavaScript/JScript

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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