CVE-2018-10992
CVE-2018-10992 is a critical-severity vulnerability in Lilypond with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-88.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 7.5
- EPSS exploit prediction: 2% (71st percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-88
- Affected product: Lilypond
- Published:
- Last modified:
Description
lilypond-invoke-editor in LilyPond 2.19.80 does not validate strings before launching the program specified by the BROWSER environment variable, which allows remote attackers to conduct argument-injection attacks via a crafted URL, as demonstrated by a --proxy-pac-file argument, because the GNU Guile code uses the system Scheme procedure instead of the system* Scheme procedure. NOTE: this vulnerability exists because of an incomplete fix for CVE-2017-17523.
Frequently asked questions
- What is CVE-2018-10992?
- lilypond-invoke-editor in LilyPond 2.19.80 does not validate strings before launching the program specified by the BROWSER environment variable, which allows remote attackers to conduct argument-injection attacks via a crafted URL, as demonstrated by a --proxy-pac-file argument, because the GNU Guile code uses the system Scheme procedure instead of the system* Scheme procedure. NOTE: this vulnerability exists because of an incomplete fix for CVE-2017-17523.
- How severe is CVE-2018-10992?
- CVE-2018-10992 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2018-10992 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-10992?
- CVE-2018-10992 affects Lilypond. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2018-10992?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2018-10992 published?
- CVE-2018-10992 was published on 2018-05-11 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:lilypond:lilypond:2.19.80:*:*:*:*:*:*:*
More vulnerabilities in Lilypond
- CVE-2020-17353 — Critical (CVSS 9.8): scm/define-stencil-commands.scm in LilyPond through 2.20.0, and 2.21.x through 2.21.4, when -dsafe is used, lacks…
- CVE-2017-17523 — High (CVSS 8.8): lilypond-invoke-editor in LilyPond 2.19.80 does not validate strings before launching the program specified by the…
- CVE-2020-17354 — High (CVSS 8.6): LilyPond before 2.24 allows attackers to bypass the -dsafe protection mechanism via output-def-lookup or…
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