- Exploited
- No known exploitation
- Fix
- Fixed in 5.9.3
- Who is exposed
- Not reported
Do first: Upgrade to a fixed version: 5.9.3.
- Last modified
- 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? →
- 27/100 · provisional
- The rating the maker of the software gives it. Shown when it differs from the CVSS level.What do these mean? →
- High (ghsa)
- 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
The devalue library is affected: under very constrained circumstances, data that was parsed and then passed to its uneval function can turn a small payload into a very large serialized string.
Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.
Read the original description
Under very constrained circumstances, data that was parsed and then passed to uneval could turn a small payload into a very large serialized string.
cve.now Index
- Exploitation?/40Unknown. No CISA SSVC exploitation rating yet
- Exposure?/25Unknown. No advisory context yet
- Reach20/20devalue: 24.5M downloads a week
- Severity7/10Rated high by ghsa
- No patch0/5No signal
What would change the score
- Would score about 82 if added to CISA KEV
- Would score about 77 if CISA's SSVC rates exploitation active
- Would score about 49 if advisories confirm default setups are exposed
Impact
What to do
Upgrade to a fixed version: 5.9.3.
Timeline
- Advisory published
- Record last updated
Affected versions
- devaluenpm
fixed in 5.9.3
Evidence 4
- Advisory
- Repository
- Repository
- Repository
Corrections
None so far.
Something wrong on this page? Report an error. Every fix is listed here.
Questions about GHSA-MCM9-63F2-9J32
Is GHSA-MCM9-63F2-9J32 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 GHSA-MCM9-63F2-9J32?
devalue (npm): before 5.9.3.Source: cve.now feed data
How do I fix GHSA-MCM9-63F2-9J32?
Upgrade to a fixed version: 5.9.3.Source: cve.now feed data