Cross-zone scripting vulnerability in the NowPlaying functionality in NullSoft Winamp before 5.541 allows remote attackers to conduct cross-
Cross-zone scripting vulnerability in the NowPlaying functionality in NullSoft Winamp before 5.541 allows remote attackers to conduct cross-site scripting (XSS) attacks via an MP3 file with JavaScript in id3 tags.
- Published
- Aug 10, 2008
- Updated
- Jun 16, 2026
- EPSS
- 1.9% · 79th percentile
- CWE
- CWE-79
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Report tools
Action score
18
Monitor
Low priority for now.
- CVSS
- 17 / 40 · 4.3 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 1.9%
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpAffected systems
| Vendor | Product | CPE |
|---|---|---|
| nullsoft | winamp | cpe:2.3:a:nullsoft:winamp |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- nullsoft winampup to 5.54 inclusive
- nullsoft winamp2.0
- nullsoft winamp2.10
- nullsoft winamp2.24
- nullsoft winamp2.4
- nullsoft winamp2.50
- nullsoft winamp2.5e
- nullsoft winamp2.60
- nullsoft winamp2.61
- nullsoft winamp2.62
- nullsoft winamp2.64
- nullsoft winamp2.65
- nullsoft winamp2.6x
- nullsoft winamp2.70
- nullsoft winamp2.71
- nullsoft winamp2.72
- nullsoft winamp2.73
- nullsoft winamp2.74
- nullsoft winamp2.75
- nullsoft winamp2.76
Same product
nullsoft: all recordsOther highest-scoring records for the same primary product.
- CVE-2006-0476Buffer overflow in Nullsoft Winamp 5.12 allows remote attackers to execute arbitrary code via a playlist (pls) file with a long file name (F52Plan
- CVE-2009-1831The Nullsoft Modern Skins Support module (gen_ff.dll) in Nullsoft Winamp before 5.552 allows remote attackers to execute arbitrary code via 48Plan
- CVE-2009-0263Multiple buffer overflows in Winamp 5.541 and earlier allow remote attackers to cause a denial of service and possibly execute arbitrary cod45Plan
- CVE-2004-1119Stack-based buffer overflow in IN_CDDA.dll in Winamp 5.05, and possibly other versions including 5.06, allows remote attackers to execute ar45Plan
- CVE-2011-4857Heap-based buffer overflow in the in_mod.dll plugin in Winamp before 5.623 allows remote attackers to execute arbitrary code via crafted son41Plan
- CVE-2006-5567Multiple heap-based buffer overflows in AOL Nullsoft WinAmp before 5.31 allow user-assisted remote attackers to execute arbitrary code via a41Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
If successful
- Confidentiality
- none
- Integrity
- P · data or configuration can be modified
- Availability
- none
- Attack complexity
- M
- Confidentiality impact
- None
- Integrity impact
- P
- Availability impact
- None
Weakness class (CWE)
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')CVSS vector
AV:N/AC:M/Au:N/C:N/I:P/A:N
nvd-primary
Root cause
User content is inserted into the page as HTML. The browser interprets the content as code rather than data.
The bug in code
The whole CWE-79 classA representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.
Vulnerable
commentEl.innerHTML = comment.body;Fixed
commentEl.textContent = comment.body;Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Change log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
- blog.watchfire.com/wfblog/2008/09/winamp-nowplayi.html
- forums.winamp.com/showthread.php?threadid=295505
- secunia.com/advisories/31371
- www.securityfocus.com/bid/30539
- exchange.xforce.ibmcloud.com/vulnerabilities/44207
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15716
Vendor advisories and official records. Exploit/PoC links are deliberately left out.