HIGH
mercurial: Python debugger accessible to authorized users
Published Jun 6, 2017
8.7
HIGHCVSS 4.0
EPSS 21.68%
Description
In Mercurial before 4.1.3, "hg serve --stdio" allows remote authenticated users to launch the Python debugger, and consequently execute arbitrary code, by using --debugger as a repository name.
Affected products
No data.
Configuration 2
OR
- 8.0
- 9.0
Configuration 3
OR
- 6.0
- 7.0
- 6.0
- 7.0
- 7.3
- 7.4
- 7.6
- 7.3
- 7.4
- 7.5
- 7.6
- 7.3
- 7.6
- 6.0
- 7.0
No data.
Red Hat Enterprise Linux 6
mercurial-0:1.4-5.el6_9
Fixed · RHSA-2017:1576
Red Hat Enterprise Linux 7
mercurial-0:2.6.2-7.el7_3
Fixed · RHSA-2017:1576
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | mercurial-0:1.4-5.el6_9 | Fixed | RHSA-2017:1576 |
| Red Hat Enterprise Linux 7 | mercurial-0:2.6.2-7.el7_3 | Fixed | RHSA-2017:1576 |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
8.7 HIGH GHSA
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Attack Vector Network
Attack Complexity Low
Attack Requirements None
Privileges Required Low
User Interaction None
Vulnerable System Confidentiality High
Vulnerable System Integrity High
Vulnerable System Availability High
Subsequent System Confidentiality None
Subsequent System Integrity None
Subsequent System Availability None
8.8 HIGH NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
6.3 MEDIUM Red Hat
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Impact Low
Integrity Impact Low
Availability Impact Low
9.0 HIGH NVD
AV:N/AC:L/Au:S/C:C/I:C/A:C
Access Vector Network
Access Complexity Low
Authentication Single
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
21.68% 0.21685
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.21685
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (58 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 21.68% (0.21685) | 97.56th | v5 (v2026.06.15) |
| Jun 15, 2026 | 21.51% (0.21512) | 97.30th | v5 (v2026.06.15) |
| Mar 4, 2026 | 48.70% (0.48699) | 97.69th | v4 (v2025.03.14) |
| Mar 1, 2026 | 50.83% (0.50832) | 97.81th | v4 (v2025.03.14) |
| Feb 4, 2026 | 48.70% (0.48699) | 97.66th | v4 (v2025.03.14) |
| Feb 1, 2026 | 50.83% (0.50832) | 97.79th | v4 (v2025.03.14) |
| Jan 4, 2026 | 48.70% (0.48699) | 97.65th | v4 (v2025.03.14) |
| Jan 1, 2026 | 50.83% (0.50832) | 97.77th | v4 (v2025.03.14) |
| Dec 4, 2025 | 48.70% (0.48699) | 97.62th | v4 (v2025.03.14) |
| Dec 1, 2025 | 50.83% (0.50832) | 97.74th | v4 (v2025.03.14) |
| Nov 21, 2025 | 48.70% (0.48699) | 97.62th | v4 (v2025.03.14) |
| Nov 18, 2025 | 46.34% (0.46335) | 97.51th | v4 (v2025.03.14) |
| Nov 4, 2025 | 48.70% (0.48699) | 97.61th | v4 (v2025.03.14) |
| Nov 1, 2025 | 50.83% (0.50832) | 97.73th | v4 (v2025.03.14) |
| Oct 4, 2025 | 48.70% (0.48699) | 97.67th | v4 (v2025.03.14) |
| Oct 1, 2025 | 50.83% (0.50832) | 97.79th | v4 (v2025.03.14) |
| Sep 4, 2025 | 48.70% (0.48699) | 97.69th | v4 (v2025.03.14) |
| Sep 1, 2025 | 50.83% (0.50832) | 97.80th | v4 (v2025.03.14) |
| Aug 5, 2025 | 48.70% (0.48699) | 97.66th | v4 (v2025.03.14) |
| Aug 1, 2025 | 50.83% (0.50832) | 97.78th | v4 (v2025.03.14) |
| Jul 5, 2025 | 48.70% (0.48699) | 97.63th | v4 (v2025.03.14) |
| Jul 1, 2025 | 50.83% (0.50832) | 97.73th | v4 (v2025.03.14) |
| Jun 5, 2025 | 48.70% (0.48699) | 97.60th | v4 (v2025.03.14) |
| Jun 1, 2025 | 50.83% (0.50832) | 97.72th | v4 (v2025.03.14) |
| May 6, 2025 | 48.70% (0.48699) | 97.59th | v4 (v2025.03.14) |
| May 1, 2025 | 50.83% (0.50832) | 97.70th | v4 (v2025.03.14) |
| Apr 14, 2025 | 48.70% (0.48699) | 97.54th | v4 (v2025.03.14) |
| Apr 13, 2025 | 50.83% (0.50832) | 97.65th | v4 (v2025.03.14) |
| Apr 10, 2025 | 48.70% (0.48699) | 97.54th | v4 (v2025.03.14) |
| Apr 9, 2025 | 50.83% (0.50832) | 97.64th | v4 (v2025.03.14) |
| Apr 8, 2025 | 48.70% (0.48699) | 97.53th | v4 (v2025.03.14) |
| Apr 7, 2025 | 50.83% (0.50832) | 97.64th | v4 (v2025.03.14) |
| Apr 2, 2025 | 48.70% (0.48699) | 97.52th | v4 (v2025.03.14) |
| Apr 1, 2025 | 50.83% (0.50832) | 97.63th | v4 (v2025.03.14) |
| Mar 30, 2025 | 48.70% (0.48699) | 97.52th | v4 (v2025.03.14) |
| Mar 29, 2025 | 63.91% (0.63905) | 97.79th | v4 (v2025.03.14) |
| Mar 28, 2025 | 48.70% (0.48699) | 97.52th | v4 (v2025.03.14) |
| Mar 27, 2025 | 50.83% (0.50832) | 97.48th | v4 (v2025.03.14) |
| Mar 17, 2025 | 48.70% (0.48699) | 97.48th | v4 (v2025.03.14) |
| Dec 17, 2024 | 0.99% (0.00992) | 83.35th | v3 (v2023.03.01) |
| Dec 12, 2024 | 2.04% (0.02037) | 89.43th | v3 (v2023.03.01) |
| Jan 8, 2024 | 3.00% (0.02997) | 89.88th | v3 (v2023.03.01) |
| Dec 1, 2023 | 2.84% (0.02845) | 89.58th | v3 (v2023.03.01) |
| Sep 10, 2023 | 2.64% (0.02637) | 89.05th | v3 (v2023.03.01) |
| Aug 2, 2023 | 3.29% (0.03291) | 90.00th | v3 (v2023.03.01) |
| Jun 22, 2023 | 3.68% (0.03677) | 90.41th | v3 (v2023.03.01) |
| May 17, 2023 | 3.34% (0.03342) | 89.95th | v3 (v2023.03.01) |
| May 8, 2023 | 2.90% (0.02898) | 89.25th | v3 (v2023.03.01) |
| Apr 16, 2023 | 1.84% (0.01842) | 86.50th | v3 (v2023.03.01) |
| Mar 22, 2023 | 2.10% (0.02095) | 87.36th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.94% (0.02940) | 89.27th | v3 (v2023.03.01) |
| Mar 6, 2023 | 32.34% (0.32336) | 97.59th | v2 (v2022.01.01) |
| Mar 3, 2022 | 32.34% (0.32336) | 96.56th | v2 (v2022.01.01) |
| Feb 4, 2022 | 31.72% (0.31724) | 96.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 23.75% (0.23745) | 95.03th | v1 |
| Jan 6, 2022 | 23.75% (0.23745) | 94.97th | v1 |
| Sep 1, 2021 | 23.75% (0.23745) | 98.07th | v1 |
| Apr 14, 2021 | 23.75% (0.23745) | 0.00th | v1 |
Weaknesses (2)
References (15)
- http://www.debian.org/security/2017/dsa-3963 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.securityfocus.com/bid/99123 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2017:1576 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2017-9462 Vendor Advisory
- https://bugs.debian.org/861243 x_refsource_CONFIRMIssue TrackingMailing ListPatchThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1459482 Issue Tracking
- https://github.com/advisories/GHSA-ghjx-3jg5-h6r2 Advisory
- https://github.com/pypa/advisory-database/tree/main/vulns/mercurial/PYSEC-2017-91.yaml
- https://lists.debian.org/debian-lts-announce/2018/07/msg00005.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2017-9462
- https://security.gentoo.org/glsa/201709-18 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://web.archive.org/web/20200227162318/http://www.securityfocus.com/bid/99123
- https://www.cve.org/CVERecord?id=CVE-2017-9462
- https://www.mercurial-scm.org/repo/hg/rev/77eaf9539499 x_refsource_CONFIRMMailing ListVendor Advisory
- https://www.mercurial-scm.org/wiki/WhatsNew#Mercurial_4.1.3_.282017-4-18.29 x_refsource_CONFIRMRelease NotesVendor Advisory
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jun 6, 2017
Updated Aug 5, 2024
Reserved Jun 6, 2017
Link CVE-2017-9462
CISA Vulnrichment
GHSA-GHJX-3JG5-H6R2 Updated n/a