Memory leak in the http_request_parse function in request.c in lighttpd before 1.4.20 allows remote attackers to cause a denial of service (
Noroxi assessment
Priority: Monitor (action score 21/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 3.5% (FIRST EPSS); higher than 88.9% of all records.
- No special conditions are required; it is repeatable.
- Fixed version: lighttpd (Debian:12) 1.4.19-5; lighttpd (Debian:4.0) 1.4.13-4etch11.
Low priority for now. Upgrade to lighttpd (Debian:12) 1.4.19-5; lighttpd (Debian:4.0) 1.4.13-4etch11 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Memory leak in the http_request_parse function in request.c in lighttpd before 1.4.20 allows remote attackers to cause a denial of service (memory consumption) via a large number of requests with duplicate request headers.
- Published
- Sep 27, 2008
- Updated
- Jun 16, 2026
- EPSS
- 3.5% · 89th percentile
- CWE
- CWE-399
Report tools
Action score
21
Monitor
Low priority for now.
- CVSS
- 20 / 40 · 5.0 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 3.5%
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
Is your version affected? Check itNoroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| lighttpd | lighttpd | cpe:2.3:a:lighttpd:lighttpd |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- lighttpd lighttpdup to 1.4.19 inclusive
- lighttpd lighttpd1.1.1
- lighttpd lighttpd1.1.2
- lighttpd lighttpd1.1.3
- lighttpd lighttpd1.1.4
- lighttpd lighttpd1.1.5
- lighttpd lighttpd1.1.6
- lighttpd lighttpd1.1.7
- lighttpd lighttpd1.1.8
- lighttpd lighttpd1.1.9
- lighttpd lighttpd1.2.1
- lighttpd lighttpd1.2.2
- lighttpd lighttpd1.2.3
- lighttpd lighttpd1.2.4
- lighttpd lighttpd1.2.5
- lighttpd lighttpd1.2.6
- lighttpd lighttpd1.2.7
- lighttpd lighttpd1.2.8
- lighttpd lighttpd1.3.0
- lighttpd lighttpd1.3.1
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | lighttpd | before 1.4.19-5 | 1.4.19-5 |
| Debian:4.0 | lighttpd | before 1.4.13-4etch11 | 1.4.13-4etch11 |
Same product
lighttpd: all recordsOther highest-scoring records for the same primary product.
- CVE-2019-11072lighttpd before 1.4.54 has a signed integer overflow, which might allow remote attackers to cause a denial of service (application crash) or61This week
- CVE-2014-2323SQL injection vulnerability in mod_mysql_vhost.c in lighttpd before 1.4.35 allows remote attackers to execute arbitrary SQL commands via the58Plan
- CVE-2022-30780Lighttpd 1.4.56 through 1.4.58 allows a remote attacker to cause a denial of service (CPU consumption from stuck connections) because connec47Plan
- CVE-2018-19052An issue was discovered in mod_alias_physical_handler in mod_alias.c in lighttpd before 1.4.50.34Monitor
- CVE-2007-3949mod_access.c in lighttpd 1.4.15 ignores trailing / (slash) characters in the URL, which allows remote attackers to bypass url.access-deny se34Monitor
- CVE-2015-3200mod_auth in lighttpd before 1.4.36 allows remote attackers to inject arbitrary log entries via a basic HTTP authentication string without a 33Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:lighttpd | 1.4.19-5 · Debian:12 | Package registry (OSV) |
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
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- P · the service can be disrupted
- Attack complexity
- Low
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- P
Weakness class (CWE)
CWE-399 · Resource Management ErrorsCVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- bugs.gentoo.org/show_bug.cgi?id=238180
- lists.opensuse.org/opensuse-security-announce/2008-11/msg00002.html
- secunia.com/advisories/32069
- secunia.com/advisories/32132
- secunia.com/advisories/32480
- secunia.com/advisories/32834
- secunia.com/advisories/32972
- security.gentoo.org/glsa/glsa-200812-04.xml
- trac.lighttpd.net/trac/changeset/2305
- trac.lighttpd.net/trac/ticket/1774
- wiki.rpath.com/Advisories:rPSA-2008-0309
- wiki.rpath.com/wiki/Advisories:rPSA-2008-0309
- www.debian.org/security/2008/dsa-1645
- www.lighttpd.net/security/lighttpd_sa_2008_07.txt
- www.openwall.com/lists/oss-security/2008/09/26/5
- www.securityfocus.com/archive/1/497932/100/0/threaded
- www.securityfocus.com/bid/31434
- www.vupen.com/english/advisories/2008/2741
- exchange.xforce.ibmcloud.com/vulnerabilities/45471
Vendor advisories and official records. Exploit/PoC links are deliberately left out.