The HTML rendering engine in Mozilla Thunderbird 1.5, when "Block loading of remote images in mail messages" is enabled, does not properly b
The HTML rendering engine in Mozilla Thunderbird 1.5, when "Block loading of remote images in mail messages" is enabled, does not properly block external images from inline HTML attachments, which could allow remote attackers to obtain sensitive information, such as application version or IP address, when the user reads the email and the external image is accessed.
- Published
- Mar 7, 2006
- Updated
- Jun 16, 2026
- EPSS
- 5.0% · 92th percentile
- CWE
- —
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Report tools
Action score
11
Monitor
Low priority for now.
- CVSS
- 10 / 40 · 2.6 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 5.0%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| mozilla | thunderbird | cpe:2.3:a:mozilla:thunderbird |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- mozilla thunderbird1.5
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | thunderbird | before 1.5.0.2-1 | 1.5.0.2-1 |
| Debian:3.1 | mozilla | before 2:1.7.8-1sarge5 | 2:1.7.8-1sarge5 |
| Debian:3.1 | mozilla-thunderbird | before 1.0.2-2.sarge1.0.8 | 1.0.2-2.sarge1.0.8 |
| Red Hat:enterprise_linux:4::as | thunderbird | before 0:1.0.8-1.4.1 | 0:1.0.8-1.4.1 |
| Red Hat:enterprise_linux:4::as | thunderbird-debuginfo | before 0:1.0.8-1.4.1 | 0:1.0.8-1.4.1 |
Same product
mozilla: all recordsOther highest-scoring records for the same primary product.
- CVE-2019-11705A flaw in Thunderbird's implementation of iCal causes a stack buffer overflow in icalrecur_add_bydayrules when processing certain email mess42Plan
- CVE-2019-11704A flaw in Thunderbird's implementation of iCal causes a heap buffer overflow in icalmemory_strdup_and_dequote when processing certain email 42Plan
- CVE-2019-11703A flaw in Thunderbird's implementation of iCal causes a heap buffer overflow in parser_get_next_char when processing certain email messages,42Plan
- CVE-2015-2740Buffer overflow in the nsXMLHttpRequest::AppendToResponseText function in Mozilla Firefox before 39.0, Firefox ESR 31.x before 31.8 and 38.x42Plan
- CVE-2013-5603Use-after-free vulnerability in the nsContentUtils::ContentIsHostIncludingDescendantOf function in Mozilla Firefox before 25.0, Firefox ESR 42Plan
- CVE-2013-1719Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 24.0, Thunderbird before 24.0, and SeaMonkey before 2.242Plan
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:mozilla | 2:1.7.8-1sarge5 · Debian:3.1 | Package registry (OSV) |
| debian:mozilla-thunderbird | 1.0.2-2.sarge1.0.8 · Debian:3.1 | Package registry (OSV) |
| debian:thunderbird | 1.5.0.2-1 · Debian:12 | Package registry (OSV) |
| red hat:thunderbird | 0:1.0.8-1.4.1 · Red Hat:enterprise_linux:4::as | Package registry (OSV) |
| red hat:thunderbird-debuginfo | 0:1.0.8-1.4.1 · Red Hat:enterprise_linux:4::as | Package registry (OSV) |
Exploit status
Proof of concept available
A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.
Evidence
- Exploit-DB entry ×1
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Exploit-DB entry | webapps | 2006-02-28 |
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.
- First PoC-7 d
- Published
- TodaySep 30, 2026+7512 d
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
- P · data can be read
- Integrity
- none
- Availability
- none
- Attack complexity
- High
- Confidentiality impact
- P
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
—
CVSS vector
AV:N/AC:H/Au:N/C:P/I:N/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.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; 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 helpChange log
- Fix✗ → ✓
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References
- secunia.com/advisories/19821
- secunia.com/advisories/19823
- secunia.com/advisories/19863
- secunia.com/advisories/19902
- secunia.com/advisories/19941
- secunia.com/advisories/19950
- secunia.com/advisories/20051
- secunia.com/advisories/22065
- securityreason.com/securityalert/514
- www.debian.org/security/2006/dsa-1046
- www.debian.org/security/2006/dsa-1051
- www.gentoo.org/security/en/glsa/glsa-200604-18.xml
- www.gentoo.org/security/en/glsa/glsa-200605-09.xml
- www.mandriva.com/security/advisories?name=MDKSA-2006:078
- www.mozilla.org/security/announce/2006/mfsa2006-26.html
- www.novell.com/linux/security/advisories/2006_04_25.html
- www.redhat.com/support/errata/RHSA-2006-0330.html
- www.securityfocus.com/archive/1/446657/100/200/threaded
- www.securityfocus.com/bid/16881
- www.securityfocus.com/bid/17516
Vendor advisories and official records. Exploit/PoC links are deliberately left out.