solr: XML external entity expansion in config files allows for arbitrary file read
Published Jul 5, 2018
6.5
MEDIUMCVSS 3.0
EPSS 9.03%
Description
This vulnerability in Apache Solr 6.0.0 to 6.6.4 and 7.0.0 to 7.3.1 relates to an XML external entity expansion (XXE) in Solr config files (currency.xml, enumsConfig.xml referred from schema.xml, TIKA parsecontext config file). In addition, Xinclude functionality provided in these config files is also affected in a similar way. The vulnerability can be used as XXE using file/ftp/http protocols in order to read arbitrary local files from the Solr server or the internal network. The manipulated files can be uploaded as configsets using Solr's API, allowing to exploit that vulnerability.
Affected products
-
- Version 6.0.0 to 6.6.4StatusaffectedConstraints-
- Version 7.0.0 to 7.3.1StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Apache Software Foundation | Apache Solr | n/a |
|
Configuration 1
Configuration 2
- n/a
- n/a
No data.
JBoss Developer Studio 11
solr
Not affected
Red Hat Fuse 7
camel-solr
Not affected
Red Hat JBoss Data Grid 6
solr-core
Not affected
Red Hat JBoss Data Virtualization 6
solr-core
Not affected
Red Hat JBoss Enterprise Application Platform 6
solr-core
Not affected
Red Hat JBoss Fuse 6
solr-core
Not affected
Red Hat JBoss Fuse Service Works 6
solr-core
Not affected
Red Hat Virtualization 4
eap7-lucene-solr
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| JBoss Developer Studio 11 | solr | Not affected | n/a |
| Red Hat Fuse 7 | camel-solr | Not affected | n/a |
| Red Hat JBoss Data Grid 6 | solr-core | Not affected | n/a |
| Red Hat JBoss Data Virtualization 6 | solr-core | Not affected | n/a |
| Red Hat JBoss Enterprise Application Platform 6 | solr-core | Not affected | n/a |
| Red Hat JBoss Fuse 6 | solr-core | Not affected | n/a |
| Red Hat JBoss Fuse Service Works 6 | solr-core | Not affected | n/a |
| Red Hat Virtualization 4 | eap7-lucene-solr | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
1 other source (Red Hat) ▾
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
AV:L/AC:L/Au:N/C:P/I:N/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
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 (26 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 9.03% (0.09025) | 95.13th | v5 (v2026.06.15) |
| Sep 22, 2026 | 9.03% (0.09025) | 95.04th | v5 (v2026.06.15) |
| Sep 21, 2026 | 2.95% (0.02950) | 86.51th | v5 (v2026.06.15) |
| Sep 6, 2026 | 9.03% (0.09025) | 94.93th | v5 (v2026.06.15) |
| Sep 5, 2026 | 2.95% (0.02950) | 86.21th | v5 (v2026.06.15) |
| Aug 30, 2026 | 9.03% (0.09025) | 94.90th | v5 (v2026.06.15) |
| Aug 28, 2026 | 2.95% (0.02950) | 86.12th | v5 (v2026.06.15) |
| Aug 24, 2026 | 9.03% (0.09025) | 94.87th | v5 (v2026.06.15) |
| Aug 23, 2026 | 2.95% (0.02950) | 86.06th | v5 (v2026.06.15) |
| Jun 15, 2026 | 9.03% (0.09025) | 94.60th | v5 (v2026.06.15) |
| Jul 23, 2025 | 4.34% (0.04341) | 88.43th | v4 (v2025.03.14) |
| Jun 5, 2025 | 6.27% (0.06266) | 90.41th | v4 (v2025.03.14) |
| Mar 30, 2025 | 8.71% (0.08712) | 91.65th | v4 (v2025.03.14) |
| Mar 29, 2025 | 6.94% (0.06943) | 85.36th | v4 (v2025.03.14) |
| Mar 17, 2025 | 8.71% (0.08712) | 91.84th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.10% (0.01103) | 85.09th | v3 (v2023.03.01) |
| Apr 9, 2024 | 1.10% (0.01103) | 84.20th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.10% (0.01103) | 82.20th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.16% (0.01164) | 61.38th | v2 (v2022.01.01) |
| Oct 18, 2022 | 1.16% (0.01164) | 60.38th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.16% (0.01164) | 58.38th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.16% (0.01164) | 34.94th | v2 (v2022.01.01) |
| Feb 3, 2022 | 3.06% (0.03065) | 65.11th | v1 |
| Jan 6, 2022 | 3.06% (0.03065) | 64.78th | v1 |
| Sep 1, 2021 | 3.06% (0.03065) | 81.10th | v1 |
| Apr 14, 2021 | 3.06% (0.03065) | 0.00th | v1 |
References (13)
- http://www.securityfocus.com/bid/104690 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2018-8026 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1598621 Issue Tracking
- https://github.com/advisories/GHSA-7px3-6f6g-hxcj Advisory
- https://github.com/apache/lucene-solr/commit/1880d4824e6c5f98170b9a00aad1d437ee2aa12
- https://github.com/apache/lucene-solr/commit/3aa6086ed99fa7158d423dc7c33dae6da466b09
- https://github.com/apache/lucene-solr/commit/d1baf6ba593561f39e2da0a71a8440797005b55
- https://github.com/apache/lucene-solr/commit/e5407c5a9710247e5f728aae36224a245a51f0b
- https://issues.apache.org/jira/browse/SOLR-12450 x_refsource_CONFIRMExploitIssue TrackingVendor Advisory
- https://mail-archives.apache.org/mod_mbox/lucene-solr-user/201807.mbox/%3C0cdc01d413b7%24f97ba580%24ec72f080%24%40apache.org%3E mailing-listx_refsource_MLISTMailing ListVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-8026
- https://security.netapp.com/advisory/ntap-20190307-0002 x_refsource_CONFIRMThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-8026
Change history (0)
No recorded changes yet.