CVE-2026-72848

HIGHPre-NVD 8.68.6—
EchelonGraph scoreMEDIUM confidence

Score 8.6 from GitHub Security Advisory (severity: HIGH) published 2026-08-21. The CNA's CVSS baseline 8.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 3 sources updated this weekElevated
8.6EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 8.6Exploit: Elevated riskExposed services: Not assessed

No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.

SitemapLoader.parse_sitemap in langchain_community/document_loaders/sitemap.py applies the documented restrict_to_same_domain control only to leaf url entries. The loop over url elements filters cross-domain locations, but the loop over nested sitemap elements passes the child loc straight to self.scrape_all([loc.text], "xml"), which reaches WebBaseLoader.scrape_all and an aiohttp GET, with no domain comparison and no check for private, loopback or link-local destinations. An attacker who controls or influences an ingested sitemap can therefore point a nested sitemap entry at an internal address and make the server fetch it even when the deploying application set restrict_to_same_domain to True specifically to confine outbound requests. The fetched content is parsed and surfaces in the returned Documents, so internal responses are disclosed to the caller rather than merely requested.

CVSS v3
8.6
EG Score
8.6HIGHmedium confidence
EG Risk
70
EG Risk 70/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity86% × 45%
Exploitation40% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.6%
EPSS %ILE
47th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 20, 2026

Last Modified

October 1, 2026

Advisory Details (4)

Auto-updated Aug 20, 2026
No patch confirmed yet.
generic

langchain-community SitemapLoader Does Not Apply restrict_to_same_domain to Nested Sitemap Index Entries, Allowing Server-Side Request Forgery | Advisories | VulnCheck

https://www.vulncheck.com/advisories/langchain-community-sitemaploader-does-not-apply-restrict-to-same-domain-to-nested-sitemap-index-entries-allowing-server-side-request-forgery
generic

SSRF via recursive sitemap fetch in `SitemapLoader` — `restrict_to_same_domain` is not enforced on nested `<sitemap>` entries · Issue #38814 · langchain-ai/langchain · GitHub

https://github.com/langchain-ai/langchain/issues/38814
generic

langchain-community/libs/community/langchain_community/document_loaders/sitemap.py at main · langchain-ai/langchain-community · GitHub

https://github.com/langchain-ai/langchain-community/blob/main/libs/community/langchain_community/document_loaders/sitemap.py
generic

GitHub - langchain-ai/langchain-community: ⚠️ No longer maintained, see linked issue · GitHub

https://github.com/langchain-ai/langchain-community

Vendor Advisories for CVE-2026-72848(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 24× in last 7d / 108× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 179 total refreshes for this CVE.

  1. 2026-10-05 12:35 UTCGHSA enrichment
  2. 2026-10-05 01:38 UTCEG score recompute
  3. 2026-10-05 01:38 UTCGHSA enrichment
  4. 2026-10-04 23:22 UTCEPSS rescore
  5. 2026-10-04 14:41 UTCGHSA enrichment
  6. 2026-10-04 03:40 UTCGHSA enrichment
  7. 2026-10-03 16:44 UTCEG score recompute
  8. 2026-10-03 16:44 UTCGHSA enrichment
  9. 2026-10-03 14:26 UTCEPSS rescore
  10. 2026-10-03 01:46 UTCEG score recompute
  11. 2026-10-03 01:46 UTCGHSA enrichment
  12. 2026-10-02 14:49 UTCGHSA enrichment
  13. 2026-10-02 03:40 UTCEG score recompute
  14. 2026-10-02 03:40 UTCGHSA enrichment
  15. 2026-10-01 19:50 UTCEPSS rescore
  16. 2026-10-01 15:28 UTCEG score recompute
  17. 2026-10-01 15:28 UTCGHSA enrichment
  18. 2026-10-01 07:26 UTCGHSA enrichment
  19. 2026-09-30 20:30 UTCEG score recompute
  20. 2026-09-30 20:29 UTCGHSA enrichment
  21. 2026-09-30 08:04 UTCEG score recompute
  22. 2026-09-30 08:04 UTCGHSA enrichment
  23. 2026-09-28 23:57 UTCEG score recompute
  24. 2026-09-28 23:57 UTCGHSA enrichment
  25. 2026-09-28 13:52 UTCEPSS rescore
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  1. 2026-09-28 12:56 UTCGHSA enrichment
  2. 2026-09-28 01:59 UTCGHSA enrichment
  3. 2026-09-27 14:48 UTCEG score recompute
  4. 2026-09-27 14:47 UTCGHSA enrichment
  5. 2026-09-27 13:48 UTCEPSS rescore
  6. 2026-09-27 02:48 UTCEG score recompute
  7. 2026-09-27 02:48 UTCGHSA enrichment
  8. 2026-09-26 15:59 UTCEPSS rescore
  9. 2026-09-25 07:12 UTCGHSA enrichment
  10. 2026-09-24 20:15 UTCEG score recompute
  11. 2026-09-24 20:15 UTCGHSA enrichment
  12. 2026-09-24 14:58 UTCEG score recompute
  13. 2026-09-24 14:58 UTCGHSA enrichment
  14. 2026-09-24 06:59 UTCGHSA enrichment
  15. 2026-09-23 20:02 UTCEG score recompute
  16. 2026-09-23 20:02 UTCGHSA enrichment
  17. 2026-09-23 17:54 UTCEPSS rescore
  18. 2026-09-23 08:39 UTCGHSA enrichment
  19. 2026-09-22 21:42 UTCEG score recompute
  20. 2026-09-22 21:42 UTCGHSA enrichment
  21. 2026-09-22 10:45 UTCGHSA enrichment
  22. 2026-09-21 23:48 UTCEG score recompute
  23. 2026-09-21 23:48 UTCGHSA enrichment
  24. 2026-09-21 21:09 UTCEPSS rescore
  25. 2026-09-21 12:51 UTCGHSA enrichment
  26. 2026-09-21 01:55 UTCGHSA enrichment
  27. 2026-09-20 14:58 UTCGHSA enrichment
  28. 2026-09-20 04:01 UTCEG score recompute
  29. 2026-09-20 04:01 UTCGHSA enrichment
  30. 2026-09-19 17:04 UTCEG score recompute
  31. 2026-09-19 17:04 UTCGHSA enrichment
  32. 2026-09-19 06:08 UTCEG score recompute
  33. 2026-09-19 06:07 UTCGHSA enrichment
  34. 2026-09-18 19:28 UTCEPSS rescore
  35. 2026-09-18 19:11 UTCGHSA enrichment
  36. 2026-09-18 08:14 UTCGHSA enrichment
  37. 2026-09-17 21:18 UTCEG score recompute
  38. 2026-09-17 21:18 UTCGHSA enrichment
  39. 2026-09-17 08:39 UTCGHSA enrichment
  40. 2026-09-16 21:42 UTCEG score recompute
  41. 2026-09-16 21:42 UTCGHSA enrichment
  42. 2026-09-16 14:08 UTCEPSS rescore
  43. 2026-09-16 10:46 UTCEG score recompute
  44. 2026-09-16 10:46 UTCGHSA enrichment
  45. 2026-09-16 05:15 UTCEPSS rescore
  46. 2026-09-15 23:40 UTCGHSA enrichment
  47. 2026-09-15 12:43 UTCEG score recompute
  48. 2026-09-15 12:43 UTCGHSA enrichment
  49. 2026-09-15 03:12 UTCEPSS rescore
  50. 2026-09-15 01:45 UTCGHSA enrichment
  51. 2026-09-14 14:48 UTCGHSA enrichment
  52. 2026-09-14 03:51 UTCGHSA enrichment
  53. 2026-09-13 16:55 UTCEG score recompute
  54. 2026-09-13 16:55 UTCGHSA enrichment
  55. 2026-09-13 05:58 UTCGHSA enrichment
  56. 2026-09-12 19:02 UTCEG score recompute
  57. 2026-09-12 19:02 UTCGHSA enrichment
  58. 2026-09-12 15:02 UTCEPSS rescore
  59. 2026-09-12 08:05 UTCGHSA enrichment
  60. 2026-09-11 21:08 UTCEG score recompute
  61. 2026-09-11 21:08 UTCGHSA enrichment
  62. 2026-09-11 14:53 UTCEPSS rescore
  63. 2026-09-11 10:11 UTCEG score recompute
  64. 2026-09-11 10:11 UTCGHSA enrichment
  65. 2026-09-10 23:14 UTCGHSA enrichment
  66. 2026-09-10 12:14 UTCEG score recompute
  67. 2026-09-10 12:14 UTCGHSA enrichment
  68. 2026-09-10 09:35 UTCEPSS rescore
  69. 2026-09-10 00:47 UTCGHSA enrichment
  70. 2026-09-09 12:59 UTCGHSA enrichment
  71. 2026-09-09 01:51 UTCEG score recompute
  72. 2026-09-09 01:51 UTCGHSA enrichment
  73. 2026-09-08 22:01 UTCEPSS rescore
  74. 2026-09-08 04:31 UTCGHSA enrichment
  75. 2026-09-07 17:34 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-72848?
CVE-2026-72848 is a high vulnerability published on August 20, 2026. SitemapLoader.parsesitemap in langchaincommunity/documentloaders/sitemap.py applies the documented restricttosamedomain control only to leaf url entries. The loop over url elements filters cross-domain locations, but the loop over nested sitemap elements passes the child loc straight to…
When was CVE-2026-72848 disclosed?
CVE-2026-72848 was first published on August 20, 2026, with the most recent update on October 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-72848 actively exploited?
CVE-2026-72848 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (47th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-72848?
CVE-2026-72848 has a CVSS base score of 8.6 (the CNA's own assessment, by vulncheck; NVD's own analysis pending).
How do I remediate CVE-2026-72848?
No fix for CVE-2026-72848 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-72848 are linked in the Vendor Advisories panel on this page.

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