draw.io: Prototype pollution in GraphML (mxGraphMlCodec)
Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.
- Exploited
- No known exploitation
- Fix
- Fixed in 31.1.5
- Who is exposed
- Not reported
Do first: Upgrade to a fixed version: 31.1.5.
- Exploitation?/40Exploitation: unknown (data gap). No CISA SSVC exploitation rating yet
- Exposure7/25Reachable over the network without a login · Data gap: No advisory context yet
- Reach?/20Reach: unknown (data gap). No tracked technology or package matched
- Severity6.1/10CVSS 6.1
- No patch0/5No signal
What would change the score
- Would score about 68 if added to CISA KEV
- Would score about 63 if CISA's SSVC rates exploitation active
- Would score about 28 if advisories confirm default setups are exposed
CVE-2026-115762 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 6.1 (medium) and affects drawio; fixed in 31.1.5.
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- Published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- A 0-100 score for how much a CVE matters across the industry: exploitation, exposure, how widely the software is used, severity and whether a fix exists.What do these mean? →
- 13/100 · provisional
- Fix
- Fixed in 31.1.5
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
Draw.io, a diagramming and whiteboarding application, is affected by a prototype pollution flaw in its GraphML decoder, which an attacker can trigger remotely without logging in by getting a user to import a malicious GraphML file. Successful exploitation can let the attacker run script in the draw.io origin, though it requires the user to invoke the Trello integration after the import.
Read the original description
draw.io is a configurable diagramming and whiteboarding application. Prior to 31.1.5, the GraphML decoder contains a prototype-pollution vulnerability. Attacker-controlled GraphML reference keys can address inherited object properties, including prototype objects, and the decoder can then assign attacker-controlled attributes to those objects. Importing a malicious GraphML file can trigger client-side prototype pollution. In the advisory-supported cross-site scripting chain, the editor is opened in Trello mode and the user invokes the Trello integration after the import, allowing the polluted state to execute script in the draw.io origin; an existing Trello connection is not required. This vulnerability is fixed in 31.1.5.
What to do
Upgrade to a fixed version: 31.1.5.
Timeline
- CVE published
- First seen by cve.now
Affected versions
- jgraph drawio
fixed in 31.1.5
Evidence 2
- Advisory
- Repository
Corrections
None so far.
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Questions about CVE-2026-115762
Is CVE-2026-115762 being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data
Which versions are affected by CVE-2026-115762?
drawio: before 31.1.5.Source: cve.now feed data
How do I fix CVE-2026-115762?
Upgrade to a fixed version: 31.1.5.Source: cve.now feed data