Sylpheed-Claws before 2.2.2 and Sylpheed before 2.2.6 allow remote attackers to bypass the URI check functionality and makes it easier to co
Sylpheed-Claws before 2.2.2 and Sylpheed before 2.2.6 allow remote attackers to bypass the URI check functionality and makes it easier to conduct phishing attacks via a URI that begins with a space character.
- Published
- Jun 8, 2006
- Updated
- Jun 16, 2026
- EPSS
- 1.4% · 72th percentile
- CWE
- CWE-20
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Report tools
Action score
10
Monitor
Low priority for now.
- CVSS
- 10 / 40 · 2.6 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 1.4%
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 |
|---|---|---|
| sylpheed | sylpheed | cpe:2.3:a:sylpheed:sylpheed |
| sylpheed-claws | sylpheed-claws | cpe:2.3:a:sylpheed-claws:sylpheed-claws |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- sylpheed sylpheedup to 2.2.5 inclusive
- sylpheed sylpheed2.0
- sylpheed sylpheed2.0.1
- sylpheed sylpheed2.0.2
- sylpheed sylpheed2.0.3
- sylpheed sylpheed2.1
- sylpheed sylpheed2.1.1
- sylpheed sylpheed2.1.2
- sylpheed sylpheed2.1.3
- sylpheed sylpheed2.1.4
- sylpheed sylpheed2.1.5
- sylpheed-claws sylpheed-clawsup to 2.2.1 inclusive
- sylpheed-claws sylpheed-claws0.9.4
- sylpheed-claws sylpheed-claws0.9.5
- sylpheed-claws sylpheed-claws0.9.6
- sylpheed-claws sylpheed-claws1.0.2
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | sylpheed | before 2.2.6-1 | 2.2.6-1 |
Same product
sylpheed: all recordsOther highest-scoring records for the same primary product.
- CVE-2007-2958Format string vulnerability in the inc_put_error function in src/inc.c in Sylpheed 2.4.4, and Sylpheed-Claws (Claws Mail) 1.9.100 and 2.10.028Monitor
- CVE-2007-1267Sylpheed 2.2.7 and earlier does not properly use the --status-fd argument when invoking GnuPG, which prevents Sylpheed from visually disting21Monitor
- CVE-2005-3354Stack-based buffer overflow in the ldif_get_line function in ldif.c of Sylpheed before 2.1.6 allows user-assisted attackers to execute arbit21Monitor
- CVE-2005-0926Buffer overflow in Sylpheed before 1.0.4 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code vi21Monitor
- CVE-2005-0667Buffer overflow in Sylpheed before 1.0.3 and other versions before 1.9.5 allows remote attackers to execute arbitrary code via an e-mail mes21Monitor
- CVE-2003-0852Format string vulnerability in send_message.c for Sylpheed-claws 0.9.4 through 0.9.6 allows remote SMTP servers to cause a denial of service20Monitor
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:sylpheed | 2.2.6-1 · 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
- Special conditions such as timing or configuration are required.
If successful
- Confidentiality
- none
- Integrity
- P · data or configuration can be modified
- Availability
- none
- Attack complexity
- High
- Confidentiality impact
- None
- Integrity impact
- P
- Availability impact
- None
Weakness class (CWE)
CWE-20 · Improper Input ValidationCVSS vector
AV:N/AC:H/Au:N/C:N/I:P/A:N
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.
Attack patterns (CAPEC)
- Buffer Overflow via Environment VariablesCAPEC-10likelihood: High · High
- Server Side Include (SSI) InjectionCAPEC-101likelihood: High · High
- Cross Zone ScriptingCAPEC-104likelihood: Medium · High
- Command Line Execution through SQL InjectionCAPEC-108likelihood: Low · Very High
- Object Relational Mapping InjectionCAPEC-109likelihood: Low · High
- SQL Injection through SOAP Parameter TamperingCAPEC-110likelihood: High · Very High
- Double EncodingCAPEC-120likelihood: Low · Medium
- Subverting Environment Variable ValuesCAPEC-13likelihood: High · Very High
ATT&CK techniques
- Obfuscated Files or InformationT1027
- Masquerading: Invalid Code SignatureT1036.001
- Steal Web Session CookieT1539
- Subvert Trust Controls: Code SigningT1553.002
- Impair Defenses:Impair Command History LoggingT1562.003
- Hijack Execution Flow:Dynamic Linker HijackingT1574.006
- Hijack Execution Flow:Path Interception by PATH Environment VariableT1574.007
Change log
- Fix✗ → ✓
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References
- secunia.com/advisories/20476
- secunia.com/advisories/20577
- sourceforge.net/project/shownotes.php?release_id=422662&group_id=25528
- sylpheed.good-day.net/en/news.html%5C
- www.vupen.com/english/advisories/2006/2173
- www.vupen.com/english/advisories/2006/2283
- exchange.xforce.ibmcloud.com/vulnerabilities/27089
Vendor advisories and official records. Exploit/PoC links are deliberately left out.