Home/CVE/The Thunderbird Address Book URI fields contained unsanitized links. This could be used by an attacker to create and exp
CVE

CVE-2025-1015

The Thunderbird Address Book URI fields contained unsanitized links. This could be used by an attacker to create and exp

The Thunderbird Address Book URI fields contained unsanitized links. This could be used by an attacker to create and export an address book containing a malicious payload in a field. For example, in the “Other” field of the Instant Messaging section.

If another user imported the address book, clicking on the link could result in opening a web page inside Thunderbird, and that page could execute (unprivileged) JavaScript. This vulnerability was fixed in Thunderbird 128.7 and Thunderbird 135.

MEDIUM · CVSS 5.4 EPSS 0.29275
Schedule remediation
  • EPSS ≥ 0.10 - elevated exploitation probability
  • EPSS percentile: top 3% of all CVEs by exploitation likelihood
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
▤

Affected Products & Versions

1
mozilla thunderbird>= 128.0.1 and < 128.7.0
▣

Scoring & Timeline

5.4
MEDIUM · CVSS v3.1 · security@mozilla.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD04 Feb 2025 · 02:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

12
usnUSN-7663-1
suse-csafSUSE-SU-2025:0405-1
suse-csafopenSUSE-SU-2025:14731-1
rhsaRHSA-2025:1318Moderate
rhsaRHSA-2025:1319Moderate
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://bugzilla.mozilla.org/show_bug.cgi?id=1939458Permissions Required
https://www.mozilla.org/security/advisories/mfsa2025-10/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-11/
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